Production Factor Returns: The Role of Factor Utilization
Author
Abstract
Suggested Citation
DOI: 10.1162/REST_a_00434
Download full text from publisher
To our knowledge, this item is not available for download. To find whether it is available, there are three options:1. Check below whether another version of this item is available online.
2. Check on the provider's web page whether it is in fact available.
3. Perform a search for a similarly titled item that would be available.
Other versions of this item:
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2015. "Production Factor Returns: The Role of Factor Utilization," The Review of Economics and Statistics, MIT Press, vol. 97(1), pages 134-143, March.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2011. "Production factor returns : the role of factor utilisation," Post-Print halshs-00598033, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2011. "Production factor returns: the role of factor utilisation," Documents de travail du Centre d'Economie de la Sorbonne 11034, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2015. "Production Factor Returns: The Role of Factor Utilization," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-01507167, HAL.
- Cette, G. & Dromel, N. & Lecat, R. & Paret, A-C., 2011. "Production factor returns: the role of factor utilisation," Working papers 317, Banque de France.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2015. "Production Factor Returns: The Role of Factor Utilization," PSE-Ecole d'économie de Paris (Postprint) hal-01507167, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2011. "Production factor returns : the role of factor utilisation," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00598033, HAL.
References listed on IDEAS
- Shapiro, Matthew D, 1993. "Cyclical Productivity and the Workweek of Capital," American Economic Review, American Economic Association, vol. 83(2), pages 229-233, May.
- Caballero, Ricardo J. & Lyons, Richard K., 1992.
"External effects in U.S. procyclical productivity,"
Journal of Monetary Economics, Elsevier, vol. 29(2), pages 209-225, April.
- Caballero, R.J. & Lyons, R.K., 1991. "External Effects in U.S. Procyclical Productivity," Papers 91-19, Columbia - Graduate School of Business.
- D. W. Jorgenson & Z. Griliches, 1967. "The Explanation of Productivity Change," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 34(3), pages 249-283.
- Nadiri, M Ishaq & Rosen, Sherwin, 1969. "Interrelated Factor Demand Functions," American Economic Review, American Economic Association, vol. 59(4), pages 457-471, Part I Se.
- Oulton, Nicholas, 1996. "Increasing Returns and Externalities in UK Manufacturing: Myth or Reality?," Journal of Industrial Economics, Wiley Blackwell, vol. 44(1), pages 99-113, March.
- Basu, Susanto & Fernald, John G, 1997.
"Returns to Scale in U.S. Production: Estimates and Implications,"
Journal of Political Economy, University of Chicago Press, vol. 105(2), pages 249-283, April.
- Susanto Basu & John G. Fernald, 1996. "Returns to scale in U.S. production: estimates and implications," International Finance Discussion Papers 546, Board of Governors of the Federal Reserve System (U.S.).
- N. J. Ireland & D. J. Smyth, 1970. "The Specification of Short-Run Employment Models," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 37(2), pages 281-285.
- Greenwood, Jeremy & Hercowitz, Zvi & Huffman, Gregory W, 1988. "Investment, Capacity Utilization, and the Real Business Cycle," American Economic Review, American Economic Association, vol. 78(3), pages 402-417, June.
Citations
Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
Cited by:
- Cette Gilbert & Lecat Rémy & Ahmed Jiddou Ahmed Ould, 2016.
"How do firms adjust production factors to the cycle?,"
The B.E. Journal of Macroeconomics, De Gruyter, vol. 16(2), pages 361-394, June.
- Cette, G. & Lecat, R. & Jiddou, A-O-A, 2014. "How do firms adjust production factors to the cycle?," Working papers 484, Banque de France.
- Gilbert Cette & Rémy Lecat & Ahmed Ould Ahmed Jiddou, 2016. "How do firms adjust production factors to the cycle?," Post-Print hal-03566891, HAL.
- Alex Clymo, 2019. "Dispersion Over the Business Cycle: Productivity versus Demand," 2019 Meeting Papers 1125, Society for Economic Dynamics.
- V. Bignon & F. Boissay & C. Cahn & L.-M. Harpedanne de Belleville, 2016. "Extended eligibility of credit claims for Eurosystem refinancing Consequences for the supply of credit to companies," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 15-23, Autumn.
- James Harrigan & Ariell Reshef & Farid Toubal, 2018.
"Techies, Trade, and Skill-Biased Productivity,"
NBER Working Papers
25295, National Bureau of Economic Research, Inc.
- James Harrigan & Ariell Reshef & Farid Toubal, 2021. "Techies, Trade and Skill-Biased Productivity," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-03411543, HAL.
- James Harrigan & Ariell Reshef & Farid Toubal, 2018. "Techies, Trade, and Skill-Biased Productivity," Working Papers 2018-21, CEPII research center.
- James Harrigan & Ariell Reshef & Farid Toubal, 2021. "Techies, Trade, and Skill-Biased Productivity," Working Papers hal-03355922, HAL.
- James Harrigan & Ariell Reshef & Farid Toubal, 2021. "Techies, Trade and Skill-Biased Productivity," Working Papers hal-03411543, HAL.
- Toubal, Farid & Harrigan, James & Reshef, Ariell, 2021. "Techies, Trade, and Skill-Biased Productivity," CEPR Discussion Papers 15815, C.E.P.R. Discussion Papers.
- James Harrigan & Ariell Reshef & Farid Toubal, 2021. "Techies, Trade, and Skill-Biased Productivity," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-03355922, HAL.
- Gilbert Cette & Rémy Lecat & Carole Ly-Marin, 2017.
"Long-term growth and productivity projections in advanced countries,"
OECD Journal: Economic Studies, OECD Publishing, vol. 2016(1), pages 71-90.
- Rémy Lecat & Gilbert Cette & Carole Ly-Marin, 2017. "Long-term growth and productivity projections in advanced countries," Post-Print hal-01724616, HAL.
- G. Cette & R. Lecat & C. Ly-Marin, 2017. "Long-term growth and productivity projections in advanced countries," Working papers 617, Banque de France.
- A. Berthou, 2016. "Current account adjustments and productivity dynamics in Europe during the crisis," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 59-70, Autumn.
- Francesco Daveri & Rémy Lecat & Maria Laura Parisi, 2016.
"Service Deregulation, Competition, and the Performance of French and Italian Firms,"
Scottish Journal of Political Economy, Scottish Economic Society, vol. 63(3), pages 278-302, July.
- Daveri, F. & Lecat, R. & Parisi , M L., 2011. "Service deregulation, competition and the performance of French and Italian firms," Working papers 346, Banque de France.
- Francesco Daveri & Rèmy Lecat & Maria Laura Parisi, 2013. "Service deregulation, competition and the performance of French and Italian firms," Working Papers 3, Department of the Treasury, Ministry of the Economy and of Finance.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat, 2013.
"Labour Relations Quality and Productivity: An Empirical Analysis on French Firms,"
Review of Economics and Institutions, Università di Perugia, vol. 4(2).
- Cette, G. & Dromel, N. & Lecat, R. & Paret, A-C., 2012. "Labour relations quality and productivity: An empirical analysis on French firms," Working papers 389, Banque de France.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2013. "Labour Relations Quality and Productivity: an Empirical Analysis on French Firms," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) hal-01502777, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2013. "Labour Relations Quality and Productivity: an Empirical Analysis on French Firms," PSE-Ecole d'économie de Paris (Postprint) hal-01502777, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2012. "Labour relations quality and productivity: An empirical analysis on French firms," Documents de travail du Centre d'Economie de la Sorbonne 12052, Université Panthéon-Sorbonne (Paris 1), Centre d'Economie de la Sorbonne.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2012. "Labour relations quality and productivity : An empirical analysis on French firms," Post-Print halshs-00721296, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2012. "Labour relations quality and productivity : An empirical analysis on French firms," Université Paris1 Panthéon-Sorbonne (Post-Print and Working Papers) halshs-00721296, HAL.
- Gilbert Cette & Nicolas Dromel & Rémy Lecat & Anne-Charlotte Paret, 2013. "Labour Relations Quality and Productivity: an Empirical Analysis on French Firms," Post-Print hal-01502777, HAL.
- Valérie Chouard & Laurent Baudry & Agnès Minier & Roxanne Tabouret & Sylvie Tarrieu, 2018. "Productive capital operating times increased sharply in 2017 – findings of the Banque de France survey [La durée d’utilisation des équipements progresse fortement en 2017 – Résultats de l’enquête m," Bulletin de la Banque de France, Banque de France, issue 216.
- C. Guette-Khiter, 2016. "Non-resident holdings of French CAC 40 companies at end-2015," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 35-46, Autumn.
- Françoise Delmez & Vincent Vandenberghe, 2017. "Working long hours: less productive but less costly? Firm-level evidence from Belgium," LIDAM Discussion Papers IRES 2017022, Université catholique de Louvain, Institut de Recherches Economiques et Sociales (IRES).
- Yamaguchi, Rintaro, 2020. "Available capital, utilized capital, and shadow prices in inclusive wealth accounting," Ecological Economics, Elsevier, vol. 169(C).
- Shengyu Liu & Heng Yin, 2017. "A Structural Method to Estimate Firm-level Capacity Utilization and Application to Chinese Heavy Industries," Annals of Economics and Finance, Society for AEF, vol. 18(1), pages 1-28, May.
- J. Morenas & B. Rudelle, 2016. "Money and its counterparts in France and in the euro area," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 25-34, Autumn.
- Sandra NEVOUX & Loriane PY & Laurent BAUDRY & Souny HARTWEG & Agnès MINIER & Sylvie TARRIEU, 2019. "Productive capital operating times continued to increase in 2018 - Findings of the annual Banque de France survey [La durée d’utilisation des équipements continue de progresser en 2018. Résultats d," Bulletin de la Banque de France, Banque de France, issue 222.
- R. Cezar, 2016. "France’s trade integration measured in value added," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 47-58, Autumn.
- V. Grossmann-Wirth & M. Vari, 2016. "Exiting low interest rates in a situation of excess liquidity: the experience of the Fed," Quarterly selection of articles - Bulletin de la Banque de France, Banque de France, issue 43, pages 5-14, Autumn.
- Chouard, V. & Minier, A. & Tarrieu, S. & Baudry, L. & Soual, A., 2015. "La progression modérée de la durée d’utilisation des équipements se poursuit en 2014 - Résultats de l’enquête menée par la Banque de France," Bulletin de la Banque de France, Banque de France, issue 199, pages 43-52.
- Paul Bouche & Gilbert Cette & Rémy Lecat, 2021.
"News from the Frontier: Increased Productivity Dispersion across Firms and Factor Reallocation,"
Review of Economics and Institutions, Università di Perugia, vol. 12(2).
- Paul Bouche & Gilbert Cette & Rémy Lecat, 2021. "News from the frontier: Increased productivity dispersion across firms and factor reallocation," Working papers 846, Banque de France.
Most related items
These are the items that most often cite the same works as this one and are cited by the same works as this one.- Craig Burnside & Martin Eichenbaum & Sergio Rebelo, 1995.
"Capital Utilization and Returns to Scale,"
NBER Chapters, in: NBER Macroeconomics Annual 1995, Volume 10, pages 67-124,
National Bureau of Economic Research, Inc.
- Burnside, C & Eichenbaum, M & Rebelo, S, 1995. "Capital Utilization and Returns to Scale," RCER Working Papers 402, University of Rochester - Center for Economic Research (RCER).
- Burnside, Craig & Eichenbaum, Martin & Rebelo, Sérgio, 1995. "Capital Utilization and Returns to Scale," CEPR Discussion Papers 1221, C.E.P.R. Discussion Papers.
- Craig Burnside & Martin Eichenbaum & Sergio Rebelo, 1995. "Capital Utilization and Returns to Scale," NBER Working Papers 5125, National Bureau of Economic Research, Inc.
- Craig Burnside & Martin S. Eichenbaum & Sergio Rebelo, 1995. "Capital utilization and returns to scale," Working Paper Series, Macroeconomic Issues 95-5, Federal Reserve Bank of Chicago.
- Wilson, Daniel J., 2000. "Estimating Returns to Scale: Lo, Still No Balance," Journal of Macroeconomics, Elsevier, vol. 22(2), pages 285-314, April.
- Susanto Basu & Miles S. Kimball, 1997. "Cyclical Productivity with Unobserved Input Variation," NBER Working Papers 5915, National Bureau of Economic Research, Inc.
- Jaimovich, Nir & Floetotto, Max, 2008.
"Firm dynamics, markup variations, and the business cycle,"
Journal of Monetary Economics, Elsevier, vol. 55(7), pages 1238-1252, October.
- Nir Jaimovich, 2004. "Firm Dynamics, Markup Variations, and the Business Cycle," Discussion Papers 07-013, Stanford Institute for Economic Policy Research, revised Mar 2007.
- Nuria Quella, 2006.
"Intra- and Inter-sectoral Knowledge Spillovers and TFP Growth Rates,"
2006 Meeting Papers
431, Society for Economic Dynamics.
- Quella, Núria, 2007. "Intra- and Inter-Sectoral Knowledge Spillovers and TFP Growth Rates," MPRA Paper 2853, University Library of Munich, Germany.
- Wen, Yi, 1998. "Capacity Utilization under Increasing Returns to Scale," Journal of Economic Theory, Elsevier, vol. 81(1), pages 7-36, July.
- Lindström, Tomas, 1999. "External Economies at the Firm Level: Evidence from Swedish Manufacturing," Working Paper Series 89, Sveriges Riksbank (Central Bank of Sweden).
- Andreas Pfingsten & Reiner Wolff, 2009. "Factor Supply Changes in Small Open Economies: Rybczynski Derivatives under Increasing Marginal Costs," Finnish Economic Papers, Finnish Economic Association, vol. 22(1), pages 9-20, Spring.
- Stephen McKnight & Laura Povoledo, 2022.
"Endogenous fluctuations and international business cycles,"
Canadian Journal of Economics/Revue canadienne d'économique, John Wiley & Sons, vol. 55(1), pages 312-348, February.
- Stephen McKnight & Laura Povoledo, 2021. "Endogenous Fluctuations and International Business Cycles," Serie documentos de trabajo del Centro de Estudios Económicos 2021-10, El Colegio de México, Centro de Estudios Económicos.
- Mark Weder, 2006.
"A heliocentric journey into Germany's Great Depression,"
Oxford Economic Papers, Oxford University Press, vol. 58(2), pages 288-316, April.
- Weder, Mark, 2003. "A Heliocentric Journey into Germany´s Great Depression," SFB 373 Discussion Papers 2003,50, Humboldt University of Berlin, Interdisciplinary Research Project 373: Quantification and Simulation of Economic Processes.
- Mark Weder, 2005. "A Heliocentric Journey into Germany's Great Depression," School of Economics and Public Policy Working Papers 2005-13, University of Adelaide, School of Economics and Public Policy.
- Weder, Mark, 2004. "A Heliocentric Journey into Germany's Great Depression," CEPR Discussion Papers 4191, C.E.P.R. Discussion Papers.
- Mark Weder, 2005. "A Heliocentric Journey into Germany's Great Depression," Economic History 0510002, University Library of Munich, Germany.
- Mark Weder, 2004. "A Heliocentric Journey into Germany's Great Depression," Money Macro and Finance (MMF) Research Group Conference 2004 53, Money Macro and Finance Research Group.
- Martin Biewen & Constantin Weiser, 2014. "An empirical test of marginal productivity theory," Applied Economics, Taylor & Francis Journals, vol. 46(9), pages 996-1020, March.
- Jordi Galí & Thijs van Rens, 2021.
"The Vanishing Procyclicality of Labour Productivity [Why have business cycle fluctuations become less volatile?],"
The Economic Journal, Royal Economic Society, vol. 131(633), pages 302-326.
- Jordi Galí & Thijs van Rens, 2008. "The vanishing procyclicality of labor productivity," Economics Working Papers 1230, Department of Economics and Business, Universitat Pompeu Fabra, revised Jul 2010.
- Gali, Jordi & van Rens, Thijs, 2015. "The Vanishing Procyclicality of Labor Productivity," The Warwick Economics Research Paper Series (TWERPS) 1062, University of Warwick, Department of Economics.
- Jordi Galí & Thijs van Rens, 2014. "The Vanishing Procyclicality of Labor Productivity," Working Papers 489, Barcelona School of Economics.
- Galí, Jordi & van Rens, Thijs, 2010. "The Vanishing Procyclicality of Labor Productivity," IZA Discussion Papers 5099, Institute of Labor Economics (IZA).
- GalÃ, Jordi & van Rens, Thijs, 2014. "The Vanishing Procyclicality of Labor Productivity," CEPR Discussion Papers 9853, C.E.P.R. Discussion Papers.
- GalÌ, Jordi & van Rens, Thijs, 2020. "The Vanishing Procyclicality of Labour Productivity," The Warwick Economics Research Paper Series (TWERPS) 1271, University of Warwick, Department of Economics.
- Thijs van Rens & Jordi Gali, 2010. "The Vanishing Procyclicality of Labor Productivity," 2010 Meeting Papers 705, Society for Economic Dynamics.
- Galí, Jordi & van Rens, Thijs, 2010. "The vanishing procyclicality of labor productivity," Kiel Working Papers 1641, Kiel Institute for the World Economy (IfW Kiel).
- Gali, Jordi & van Rens, Thijs, 2014. "The Vanishing Procyclicality of Labor Productivity," Economic Research Papers 270221, University of Warwick - Department of Economics.
- GalÌ, Jordi & van Rens, Thijs, 2020. "The Vanishing Procyclicality of Labour Productivity," CAGE Online Working Paper Series 477, Competitive Advantage in the Global Economy (CAGE).
- Basu, Susanto & Fernald, John G. & Shapiro, Matthew D., 2001.
"Productivity growth in the 1990s: technology, utilization, or adjustment?,"
Carnegie-Rochester Conference Series on Public Policy, Elsevier, vol. 55(1), pages 117-165, December.
- Susanto Basu & John G. Fernald & Matthew D. Shapiro, 2001. "Productivity Growth in the 1990s: Technology, Utilization, or Adjustment?," NBER Working Papers 8359, National Bureau of Economic Research, Inc.
- Susanto Basu & John G. Fernald & Matthew D. Shapiro, 2001. "Productivity growth in the 1990s: technology, utilization, or adjustment," Working Paper Series WP-01-04, Federal Reserve Bank of Chicago.
- Swanson Eric T, 2006.
"The Relative Price and Relative Productivity Channels for Aggregate Fluctuations,"
The B.E. Journal of Macroeconomics, De Gruyter, vol. 6(1), pages 1-39, October.
- Eric T. Swanson, 2006. "The relative price and relative productivity channels for aggregate fluctuations," Working Paper Series 2006-20, Federal Reserve Bank of San Francisco.
- Dale W. Jorgenson & Mun S. Ho & Kevin J. Stiroh, 2005.
"Growth of US Industries and Investments in Information Technology and Higher Education,"
NBER Chapters, in: Measuring Capital in the New Economy, pages 403-478,
National Bureau of Economic Research, Inc.
- Dale Jorgenson & Mun Ho & Kevin Stiroh, 2003. "Growth of US Industries and Investments in Information Technology and Higher Education," Economic Systems Research, Taylor & Francis Journals, vol. 15(3), pages 279-325.
- Luc Everaert & Francisco Simone, 2007. "Improving the estimation of total factor productivity growth: capital operating time in a latent variable approach," Empirical Economics, Springer, vol. 33(3), pages 449-468, November.
- Kim, Daisoon, 2021. "Economies of scale and international business cycles," Journal of International Economics, Elsevier, vol. 131(C).
- Huang, Kevin X.D. & Meng, Qinglai, 2012.
"Increasing returns and unsynchronized wage adjustment in sunspot models of the business cycle,"
Journal of Economic Theory, Elsevier, vol. 147(1), pages 284-309.
- Kevin X.D. Huang & Qinglai Meng, 2010. "Increasing Returns and Unsynchronized Wage Adjustment in Sunspot Models of the Business Cycle," Vanderbilt University Department of Economics Working Papers 1007, Vanderbilt University Department of Economics.
- Jürgen Bitzer & Erkan Gören, 2016.
"Measuring capital services by energy use: an empirical comparative study,"
Applied Economics, Taylor & Francis Journals, vol. 48(53), pages 5152-5167, November.
- Jürgen Bitzer & Erkan Gören, 2013. "Measuring Capital Services by Energy Use: An Empirical Comparative Study," Working Papers V-351-13, University of Oldenburg, Department of Economics, revised Apr 2013.
- Sakellaris, Plutarchos, 2004.
"Patterns of plant adjustment,"
Journal of Monetary Economics, Elsevier, vol. 51(2), pages 425-450, March.
- Plutarchos Sakellaris, 2000. "Patterns of Plant Adjustment," Electronic Working Papers 00-001, University of Maryland, Department of Economics.
- Plutarchos Sakellaris, 2001. "Patterns of plant adjustment," Finance and Economics Discussion Series 2001-05, Board of Governors of the Federal Reserve System (U.S.).
More about this item
Keywords
Production function; productivity; factor returns;All these keywords.
JEL classification:
- D22 - Microeconomics - - Production and Organizations - - - Firm Behavior: Empirical Analysis
- D24 - Microeconomics - - Production and Organizations - - - Production; Cost; Capital; Capital, Total Factor, and Multifactor Productivity; Capacity
- E22 - Macroeconomics and Monetary Economics - - Consumption, Saving, Production, Employment, and Investment - - - Investment; Capital; Intangible Capital; Capacity
- O40 - Economic Development, Innovation, Technological Change, and Growth - - Economic Growth and Aggregate Productivity - - - General
Statistics
Access and download statisticsCorrections
All material on this site has been provided by the respective publishers and authors. You can help correct errors and omissions. When requesting a correction, please mention this item's handle: RePEc:hal:journl:hal-01507167. See general information about how to correct material in RePEc.
If you have authored this item and are not yet registered with RePEc, we encourage you to do it here. This allows to link your profile to this item. It also allows you to accept potential citations to this item that we are uncertain about.
If CitEc recognized a bibliographic reference but did not link an item in RePEc to it, you can help with this form .
If you know of missing items citing this one, you can help us creating those links by adding the relevant references in the same way as above, for each refering item. If you are a registered author of this item, you may also want to check the "citations" tab in your RePEc Author Service profile, as there may be some citations waiting for confirmation.
For technical questions regarding this item, or to correct its authors, title, abstract, bibliographic or download information, contact: CCSD (email available below). General contact details of provider: https://hal.archives-ouvertes.fr/ .
Please note that corrections may take a couple of weeks to filter through the various RePEc services.