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David Roibás
(David Roibas)

Personal Details

First Name:David
Middle Name:
Last Name:Roibas
Suffix:
RePEc Short-ID:pro989

Affiliation

(50%) Departamento de Economía
Facultad de Economía y Empresa
Universidad de Oviedo

Oviedo, Spain
http://www.unioviedo.es/economia/
RePEc:edi:deovies (more details at EDIRC)

(50%) Oviedo Efficiency Group
Facultad de Economía y Empresa
Universidad de Oviedo

Oviedo, Spain
http://www.unioviedo.es/oeg/
RePEc:edi:geovies (more details at EDIRC)

Research output

as
Jump to: Working papers Articles

Working papers

  1. Pérez, Jose Antonio & Roibás, David & Wall, Alan, 2016. "Animal health indicators and technical efficiency in milk production: A stochastic frontier analysis for Spanish dairy farms," Efficiency Series Papers 2016/05, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  2. Roibás, David & Wall, Alan & Pérez, José A., 2014. "The influence of meteorological conditions on dairy production," Efficiency Series Papers 2014/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  3. Orea, Luis & Pérez, Jose A. & Roibás, David, 2013. "Evaluating the double effect of land fragmentation on technology choice and dairy farm productivity: A latent class model approach," Efficiency Series Papers 2013/08, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  4. del Corral, J. & Pérez, J.A. & Roibás, D., 2010. "The impact of land fragmentation on milk production," Efficiency Series Papers 2010/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  5. Roibás, David & Baños, José, 2010. "The Impact of Infraestructures in Provincial Production: Assesing its Dynamic Impact," Efficiency Series Papers 2010/05, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  6. Rodríguez-Álvarez, Ana & Roibás, David & Wall, Alan, 2009. "Factors determining the response of hospitals to demand uncertainty," Efficiency Series Papers 2009/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  7. Álvarez, Antonio & Roibás, David, 2006. "An Economic Model to Evaluate the Contribution of Genetics to Milk Production," Efficiency Series Papers 2006/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  8. Roibas, David & Arias, Carlos, 2004. "Endogeneity Problems in the Estimation of Multi-Output Technologies," Efficiency Series Papers 2004/06, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
  9. Orea, Luis & Roibas, David & Wall, Alan, 2002. "Choosing the Technical Efficiency Orientation to Analyze Firms’ Technology: A Model Selection Test Approach," Efficiency Series Papers 2002/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

Articles

  1. Alvarez, Antonio & Garcia-Cornejo, Beatriz & Perez-Mendez, Jose A. & Roibas, David, 2016. "Diversification in Spanish Dairy Farms: Key Drivers of Performance," International Food and Agribusiness Management Review, International Food and Agribusiness Management Association, vol. 19(B), pages 1-26, August.
  2. Ana Rodríguez-Álvarez & David Roibás-Alonso & Alan Wall, 2013. "The response of decentralized health services to demand uncertainty and the role of political parties in the Spanish public health system," Journal of Productivity Analysis, Springer, vol. 40(3), pages 357-365, December.
  3. David Roibas & Antonio Alvarez, 2012. "The contribution of genetics to milk composition: evidence from Spain," Agricultural Economics, International Association of Agricultural Economists, vol. 43(2), pages 133-141, March.
  4. Ana Rodriguez‐Alvarez & David Roibás & Alan Wall, 2012. "Reserve Capacity Of Public And Private Hospitals In Response To Demand Uncertainty," Health Economics, John Wiley & Sons, Ltd., vol. 21(7), pages 839-851, July.
  5. David Roibás & M. García-Valiñas & Alan Wall, 2007. "Measuring welfare losses from interruption and pricing as responses to water shortages: an application to the case of Seville," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 38(2), pages 231-243, October.
  6. David Alonso, 2005. "Dynamic factor demand and irreversible adjustment in the Spanish milk sector," Spanish Economic Review, Springer;Spanish Economic Association, vol. 7(4), pages 289-306, December.
  7. Alvarez, Antonio & Arias, Carlos & Roibas, David, 2005. "Analisis de la calidad de la leche en un modelo microeconomico multi-output: el papel de la genetica," Economia Agraria y Recursos Naturales, Spanish Association of Agricultural Economists, vol. 5(10), pages 1-15.
  8. Luis Orea & David Roibás & Alan Wall, 2004. "Choosing the Technical Efficiency Orientation to Analyze Firms' Technology: A Model Selection Test Approach," Journal of Productivity Analysis, Springer, vol. 22(1), pages 51-71, July.

Citations

Many of the citations below have been collected in an experimental project, CitEc, where a more detailed citation analysis can be found. These are citations from works listed in RePEc that could be analyzed mechanically. So far, only a minority of all works could be analyzed. See under "Corrections" how you can help improve the citation analysis.

Working papers

  1. Roibás, David & Wall, Alan & Pérez, José A., 2014. "The influence of meteorological conditions on dairy production," Efficiency Series Papers 2014/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. Dios-Palomares, Rafaela & José-Diz, David Alcaide & Jurado, Manuel & Guijarro, Angel Prieto & Martinez-Paz, J. M. & Zúniga-González, Carlos Alberto, 2015. "Aspectos medioambientales en los análisis de eficiencia," Revista Iberoamericana de Bioeconomía y Cambio Climàtico, National Autonomous University of Nicaragua, Leon, vol. 1(1), pages 1-7, July.
    2. K Hervé Hervé Dakpo & Laure Latruffe & Yann Desjeux & Philippe Jeanneaux, 2021. "Latent Class Modelling for a Robust Assessment of Productivity: Application to French Grazing Livestock Farms [Modélisation des classes latentes pour une évaluation robuste de la productivité : App," Post-Print hal-03280138, HAL.

  2. Orea, Luis & Pérez, Jose A. & Roibás, David, 2013. "Evaluating the double effect of land fragmentation on technology choice and dairy farm productivity: A latent class model approach," Efficiency Series Papers 2013/08, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. Bahta, S. & Temoso, O. & Mekonnen, D. & Malope, P. & Staal, S., 2018. "Technical efficiency of beef production in agricultural districts of Botswana: A Latent Class Stochastic Frontier Model Approach," 2018 Conference, July 28-August 2, 2018, Vancouver, British Columbia 277207, International Association of Agricultural Economists.
    2. Jing Qian & Yunfei Peng & Cheng Luo & Chao Wu & Qingyun Du, 2015. "Urban Land Expansion and Sustainable Land Use Policy in Shenzhen: A Case Study of China’s Rapid Urbanization," Sustainability, MDPI, vol. 8(1), pages 1-16, December.
    3. Chaozheng Zhang & Danling Chen, 2021. "Fragmentation Reduction through Farmer-Led Land Transfer and Consolidation? Experiences of Rice Farmers in Wuhan Metropolitan Area, China," Agriculture, MDPI, vol. 11(7), pages 1-14, July.
    4. K Hervé Hervé Dakpo & Laure Latruffe & Yann Desjeux & Philippe Jeanneaux, 2021. "Latent Class Modelling for a Robust Assessment of Productivity: Application to French Grazing Livestock Farms [Modélisation des classes latentes pour une évaluation robuste de la productivité : App," Post-Print hal-03280138, HAL.
    5. Yujing Zhao & Hong Leng & Pingjun Sun & Qing Yuan, 2019. "Application and Validation of a Municipal Administrative Area Spatial Zoning Model in Village-Town System Planning," Sustainability, MDPI, vol. 11(7), pages 1-25, March.
    6. Tracy Bradfield & Robert Butler & Emma Dillon & Thia Hennessy & Paul Kilgarriff, 2021. "The Effect of Land Fragmentation on the Technical Inefficiency of Dairy Farms," Journal of Agricultural Economics, Wiley Blackwell, vol. 72(2), pages 486-499, June.

  3. del Corral, J. & Pérez, J.A. & Roibás, D., 2010. "The impact of land fragmentation on milk production," Efficiency Series Papers 2010/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. Kristina Holmström & Anna Hessle & Hans Andersson & Karl-Ivar Kumm, 2018. "Merging Small Scattered Pastures into Large Pasture-Forest Mosaics Can Improve Profitability in Swedish Suckler-Based Beef Production," Land, MDPI, vol. 7(2), pages 1-14, May.
    2. Laure Latruffe & Laurent Piet, 2013. "Does land fragmentation affect farm performance? A case study from Brittany, France," Working Papers SMART 13-04, INRAE UMR SMART.
    3. Latruffe, Laure & Piet, Laurent, 2013. "Does land fragmentation affect farm performance? A case study from Brittany," Working papers 152081, Factor Markets, Centre for European Policy Studies.
    4. Cécile Sibra & Gilles Brunschwig, 2021. "Generic Relationships between Field Uses and Their Geographical Characteristics in Mountain-Area Dairy Cattle Farms," Agriculture, MDPI, vol. 11(10), pages 1-14, September.
    5. Laure Latruffe & Laurent Piet, 2013. "Does land fragmentation affect farm performance?," Working Papers hal-01208858, HAL.
    6. Laure Latruffe & Laurent Piet, 2012. "Does land fragmentation affect farm performance?A french Breton case study," Post-Print hal-01208907, HAL.
    7. Álvarez, Inmaculada C. & Orea, Luis & Perez-Mendez, Jose A., 2019. "Rural and agricultural development by land consolidation: a spatial production analysis of Asturias´ parishes," Efficiency Series Papers 2019/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    8. Finneran, E. & Crosson, p., 2013. "Effects of scale, intensity and farm structure on the income efficiency of Irish beef farms," International Journal of Agricultural Management, Institute of Agricultural Management, vol. 2(4), pages 1-12, July.
    9. Sauer, J. & Davidova, S. & Gorton, M., 2013. "Land Fragmentation and Market Integration- Heterogenous Technologies in Kosovo," Proceedings “Schriften der Gesellschaft für Wirtschafts- und Sozialwissenschaften des Landbaues e.V.”, German Association of Agricultural Economists (GEWISOLA), vol. 48, March.
    10. Singh, Shiv Raj & Datta, K.K., 2013. "Future of Smallholders in the Indian Dairy Sector – Some Anecdotal Evidence," Indian Journal of Agricultural Economics, Indian Society of Agricultural Economics, vol. 68(2), pages 1-13.
    11. Orea, Luis & Pérez, Jose A. & Roibás, David, 2013. "Evaluating the double effect of land fragmentation on technology choice and dairy farm productivity: A latent class model approach," Efficiency Series Papers 2013/08, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    12. Niskanen, Olli & Heikkilä, Anna-Maija, 2015. "The Impact of Parcel Structure on the Efficiency of Finnish Dairy Farms," Agricultural and Resource Economics Review, Northeastern Agricultural and Resource Economics Association, vol. 44(1), pages 1-13, April.
    13. Sauer, Johannes & Davidova, Sophia & Gorton, Matthew, 2012. "Land Fragmentation, Market Integration and Farm Efficiency: Empirical Evidence from Kosovo," 2012 Annual Meeting, August 12-14, 2012, Seattle, Washington 123236, Agricultural and Applied Economics Association.
    14. Sauer, Johannes & Davidova, Sophia & Gorton, Matthew, 2012. "Heterogeneous Technologies as an Answer to Market and Price Risk: The Case of Kosovo," 123rd Seminar, February 23-24, 2012, Dublin, Ireland 122509, European Association of Agricultural Economists.
    15. Roibás, David & Wall, Alan & Pérez, José A., 2014. "The influence of meteorological conditions on dairy production," Efficiency Series Papers 2014/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    16. Tracy Bradfield & Robert Butler & Emma Dillon & Thia Hennessy & Paul Kilgarriff, 2021. "The Effect of Land Fragmentation on the Technical Inefficiency of Dairy Farms," Journal of Agricultural Economics, Wiley Blackwell, vol. 72(2), pages 486-499, June.
    17. Hengzhou Xu & Yihang Zhao & Ronghui Tan & Hongchun Yin, 2017. "Does the Policy of Rural Land Rights Confirmation Promote the Transfer of Farmland in China?," Acta Oeconomica, Akadémiai Kiadó, Hungary, vol. 67(4), pages 643-672, December.
    18. Alvarez, Antonio & Arias, Carlos, 2015. "Effects of switching between production systems in dairy farming," Bio-based and Applied Economics Journal, Italian Association of Agricultural and Applied Economics (AIEAA), vol. 4(1), pages 1-16, April.

  4. Rodríguez-Álvarez, Ana & Roibás, David & Wall, Alan, 2009. "Factors determining the response of hospitals to demand uncertainty," Efficiency Series Papers 2009/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. Zheng, Chenyang & Wang, Shuming & Li, Ningxin & Wu, Yuanhao, 2021. "Stochastic joint homecare service and capacity planning with nested decomposition approaches," European Journal of Operational Research, Elsevier, vol. 295(1), pages 203-222.

  5. Roibas, David & Arias, Carlos, 2004. "Endogeneity Problems in the Estimation of Multi-Output Technologies," Efficiency Series Papers 2004/06, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. C.J. O’Donnell & K. Nguyen, 2011. "An Econometric Approach To Estimating Support Prices And Measures Of Productivity Change In Public Hospitals," CEPA Working Papers Series WP032011, School of Economics, University of Queensland, Australia.
    2. Géraldine Henningsen & Arne Henningsen & Uwe Jensen, 2013. "A Monte Carlo Study on Multiple Output Stochastic Frontiers: Comparison of Two Approaches," IFRO Working Paper 2013/7, University of Copenhagen, Department of Food and Resource Economics.
    3. Mamardashvili, Phatima & Bokusheva, Raushan & Schmid, Dierk, 2014. "Heterogeneous Farm Output and Technical Efficiency Estimates," German Journal of Agricultural Economics, Humboldt-Universitaet zu Berlin, Department for Agricultural Economics, vol. 63(01), pages 1-15, March.
    4. Lota D. Tamini & Bruno Larue & Gale West, 2012. "Technical and environmental efficiencies and best management practices in agriculture," Applied Economics, Taylor & Francis Journals, vol. 44(13), pages 1659-1672, May.
    5. Ana Rodríguez-Álvarez & Ignacio Rosal & José Baños-Pino, 2007. "The cost of strikes in the Spanish mining sector: modelling an undesirable input with a distance function," Journal of Productivity Analysis, Springer, vol. 27(1), pages 73-83, February.

  6. Orea, Luis & Roibas, David & Wall, Alan, 2002. "Choosing the Technical Efficiency Orientation to Analyze Firms’ Technology: A Model Selection Test Approach," Efficiency Series Papers 2002/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

    Cited by:

    1. Kumbhakar, Subal & Orea, Luis & Rodríguez-Álvarez, Ana & Tsionas, Efthymos, 2003. "Estimating a Mixture of Efficiency Indices," Efficiency Series Papers 2003/08, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    2. Antonio Alvarez & Carlos Arias, 2014. "A selection of relevant issues in applied stochastic frontier analysis," Economics and Business Letters, Oviedo University Press, vol. 3(1), pages 3-11.
    3. Rodriguez, Xose Anton & Arias, Carlos, 2008. "The effects of resource depletion on coal mining productivity," Energy Economics, Elsevier, vol. 30(2), pages 397-408, March.
    4. Corton, Maria Luisa & Berg, Sanford V., 2009. "Benchmarking Central American water utilities," Utilities Policy, Elsevier, vol. 17(3-4), pages 267-275, September.
    5. Kumbhakar, Subal & Tsionas, Efthymios, 2003. "Recent Developments in Stochastic Frontier Modeling," Efficiency Series Papers 2003/06, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    6. Carol Newman & Alan Matthews, 2006. "The productivity performance of Irish dairy farms 1984–2000: a multiple output distance function approach," Journal of Productivity Analysis, Springer, vol. 26(2), pages 191-205, October.
    7. Bravo-Ureta, Boris & Solís, Daniel & Moreira, Victor & Maripani, José & Thiam, Abdourahmane & Rivas, Teodoro, 2005. "Technical Efficiency in Farming: A Meta-regression analysis," Efficiency Series Papers 2005/01, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    8. Roibas, David & Arias, Carlos, 2004. "Endogeneity Problems in the Estimation of Multi-Output Technologies," Efficiency Series Papers 2004/06, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    9. Subal Kumbhakar & Luis Orea & Ana Rodríguez-Álvarez & Efthymios Tsionas, 2007. "Do we estimate an input or an output distance function? An application of the mixture approach to European railways," Journal of Productivity Analysis, Springer, vol. 27(2), pages 87-100, April.
    10. Fabian Frick & Johannes Sauer, 2021. "Technological Change in Dairy Farming with Increased Price Volatility," Journal of Agricultural Economics, Wiley Blackwell, vol. 72(2), pages 564-588, June.
    11. Álvarez, Antonio & Arias, Carlos & Kumbhakar, Subal, 2003. "Empirical Consequences of Direction Choice in Technical Efficiency Analysis," Efficiency Series Papers 2003/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

Articles

  1. Ana Rodríguez-Álvarez & David Roibás-Alonso & Alan Wall, 2013. "The response of decentralized health services to demand uncertainty and the role of political parties in the Spanish public health system," Journal of Productivity Analysis, Springer, vol. 40(3), pages 357-365, December.

    Cited by:

    1. E. Grifell-Tatje & C. A. K. Lovell, 2013. "Productivity, Price Recovery, Capacity Constraints and their Financial Consequences," CEPA Working Papers Series WP032013, School of Economics, University of Queensland, Australia.

  2. David Roibas & Antonio Alvarez, 2012. "The contribution of genetics to milk composition: evidence from Spain," Agricultural Economics, International Association of Agricultural Economists, vol. 43(2), pages 133-141, March.

    Cited by:

    1. Helis Luik-Lindsaar & Ants-Hannes Viira & Haldja Viinalass & Tanel Kaart & Rando Värnik, 2018. "How do herd's genetic level and milk quality affect performance of dairy farms?," Czech Journal of Animal Science, Czech Academy of Agricultural Sciences, vol. 63(10), pages 379-388.
    2. Luik, Helis & Viira, Ants-Hannes & Värnik, Rando, 2014. "Using the information about dairy herd’s genetic level and milk quality in explaining the technical efficiency of Estonian dairy farms: a two-stage (DEA and Tobit) approach," 2014 International Congress, August 26-29, 2014, Ljubljana, Slovenia 182650, European Association of Agricultural Economists.
    3. Ali, Beshir M. & de Mey, Yann & Oude Lansink, Alfons G.J.M., 2021. "The effect of farm genetics expenses on dynamic productivity growth," European Journal of Operational Research, Elsevier, vol. 290(2), pages 701-717.
    4. Loughrey, J. & Thorne, F. & Kinsella, A. & Hennessy, T. & O'Donoghue, C. & Vollenweider, X., 2015. "Market risk management and the demand for forward contracts among Irish dairy farmers," International Journal of Agricultural Management, Institute of Agricultural Management, vol. 4(4), July.
    5. Orea, Luis & Pérez, Jose A. & Roibás, David, 2013. "Evaluating the double effect of land fragmentation on technology choice and dairy farm productivity: A latent class model approach," Efficiency Series Papers 2013/08, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).
    6. Jose A. Perez‐Mendez & David Roibas & Alan Wall, 2019. "The influence of weather conditions on dairy production," Agricultural Economics, International Association of Agricultural Economists, vol. 50(2), pages 165-175, March.
    7. Roibás, David & Wall, Alan & Pérez, José A., 2014. "The influence of meteorological conditions on dairy production," Efficiency Series Papers 2014/02, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

  3. Ana Rodriguez‐Alvarez & David Roibás & Alan Wall, 2012. "Reserve Capacity Of Public And Private Hospitals In Response To Demand Uncertainty," Health Economics, John Wiley & Sons, Ltd., vol. 21(7), pages 839-851, July.

    Cited by:

    1. Ana Rodríguez-Álvarez & David Roibás-Alonso & Alan Wall, 2013. "The response of decentralized health services to demand uncertainty and the role of political parties in the Spanish public health system," Journal of Productivity Analysis, Springer, vol. 40(3), pages 357-365, December.

  4. David Roibás & M. García-Valiñas & Alan Wall, 2007. "Measuring welfare losses from interruption and pricing as responses to water shortages: an application to the case of Seville," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 38(2), pages 231-243, October.

    Cited by:

    1. R. Quentin Grafton & Michael B. Ward, 2010. "Dynamically Efficient Urban Water Policy," Centre for Water Economics, Environment and Policy Papers 1013, Centre for Water Economics, Environment and Policy, Crawford School of Public Policy, The Australian National University.
    2. Valeria Bernardo & Xavier Fageda & Montserrat Termes, 2015. "Do droughts have long-term effects on water consumption? Evidence from the urban area of Barcelona," Applied Economics, Taylor & Francis Journals, vol. 47(48), pages 5131-5146, October.
    3. Katrin Millock & Céline Nauges, 2010. "Household Adoption of Water-Efficient Equipment: The Role of Socio-economic Factors, Environmental Attitudes and Policy," Documents de travail du Centre d'Economie de la Sorbonne 10044, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
    4. María Ángeles García-Valiñas & Sara Suárez-Fernández, 2022. "Are Economic Tools Useful to Manage Residential Water Demand? A Review of Old Issues and Emerging Topics," Post-Print hal-04067487, HAL.
    5. Pérez, María & García-Valiñas, María A. & Martínez-Espiñeira, Roberto, 2013. "Responses to changes in domestic water tariff structures: An analysis on household-level data from Granada, Spain," Efficiency Series Papers 2013/04, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

  5. Alvarez, Antonio & Arias, Carlos & Roibas, David, 2005. "Analisis de la calidad de la leche en un modelo microeconomico multi-output: el papel de la genetica," Economia Agraria y Recursos Naturales, Spanish Association of Agricultural Economists, vol. 5(10), pages 1-15.

    Cited by:

    1. del Corral, J., 2009. "Studying the Impact of Managerial Activities on the Technical Efficiency of Wisconsin Dairy Farm," Efficiency Series Papers 2009/01, University of Oviedo, Department of Economics, Oviedo Efficiency Group (OEG).

  6. Luis Orea & David Roibás & Alan Wall, 2004. "Choosing the Technical Efficiency Orientation to Analyze Firms' Technology: A Model Selection Test Approach," Journal of Productivity Analysis, Springer, vol. 22(1), pages 51-71, July.
    See citations under working paper version above.

More information

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Co-authorship network on CollEc

NEP Fields

NEP is an announcement service for new working papers, with a weekly report in each of many fields. This author has had 1 paper announced in NEP. These are the fields, ordered by number of announcements, along with their dates. If the author is listed in the directory of specialists for this field, a link is also provided.
  1. NEP-AGR: Agricultural Economics (1) 2016-11-06
  2. NEP-EFF: Efficiency and Productivity (1) 2016-11-06

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