IDEAS home Printed from https://ideas.repec.org/a/eee/energy/v296y2024ics0360544224008466.html
   My bibliography  Save this article

Carbon emissions trading policy and climate injustice: A study on economic distributional impacts

Author

Listed:
  • Dong, Zhaoyingzi
  • Xiao, Yue

Abstract

Energy policies have the potential to create an uneven distribution of benefits and responsibilities among different cities, but there is limited empirical research on this topic. We first employ the difference-in-differences (DID) model to assess the average impact of the ETS policy on the local economy. Then, we utilize the changes-in-changes (CIC) model to examine the distributional influence of the ETS policy on gross domestic product (GDP) across cities in China. The result shows that the ETS policy can effectively promote urban economic development. Moreover, mechanism analysis shows that the regressive beneficial effects of the ETS policy on innovation can surpass its regressive negative impact on foreign investment and industrial structure, further contributing to a regressive positive influence on GDP. This study indicates that the ETS policy could widen the gap between developing and developed cities, which raises the equity concerns of energy policy efforts.

Suggested Citation

  • Dong, Zhaoyingzi & Xiao, Yue, 2024. "Carbon emissions trading policy and climate injustice: A study on economic distributional impacts," Energy, Elsevier, vol. 296(C).
  • Handle: RePEc:eee:energy:v:296:y:2024:i:c:s0360544224008466
    DOI: 10.1016/j.energy.2024.131074
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0360544224008466
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.energy.2024.131074?utm_source=ideas
    LibKey link: if access is restricted and if your library uses this service, LibKey will redirect you to where you can use your library subscription to access this item
    ---><---

    As the access to this document is restricted, you may want to search for a different version of it.

    References listed on IDEAS

    as
    1. Paul Lanoie & Michel Patry & Richard Lajeunesse, 2008. "Environmental regulation and productivity: testing the porter hypothesis," Journal of Productivity Analysis, Springer, vol. 30(2), pages 121-128, October.
    2. Wu, Qingyang & Wang, Yanying, 2022. "How does carbon emission price stimulate enterprises' total factor productivity? Insights from China's emission trading scheme pilots," Energy Economics, Elsevier, vol. 109(C).
    3. Fremstad, Anders & Paul, Mark, 2019. "The Impact of a Carbon Tax on Inequality," Ecological Economics, Elsevier, vol. 163(C), pages 88-97.
    4. Wang, Zhenguo & Su, Bin & Xie, Rui & Long, Haiyu, 2020. "China’s aggregate embodied CO2 emission intensity from 2007 to 2012: A multi-region multiplicative structural decomposition analysis," Energy Economics, Elsevier, vol. 85(C).
    5. Erik Haites, 2018. "Carbon taxes and greenhouse gas emissions trading systems: what have we learned?," Climate Policy, Taylor & Francis Journals, vol. 18(8), pages 955-966, September.
    6. Nathaniel Baum-Snow & Ronni Pavan, 2013. "Inequality and City Size," The Review of Economics and Statistics, MIT Press, vol. 95(5), pages 1535-1548, December.
    7. Wang, Qunwei & Zhou, Bo & Zhang, Cheng & Zhou, Dequn, 2021. "Do energy subsidies reduce fiscal and household non-energy expenditures? A regional heterogeneity assessment on coal-to-gas program in China," Energy Policy, Elsevier, vol. 155(C).
    8. Jiang, Zhujun & Shao, Shuai, 2014. "Distributional effects of a carbon tax on Chinese households: A case of Shanghai," Energy Policy, Elsevier, vol. 73(C), pages 269-277.
    9. Chan, Hei Sing (Ron) & Li, Shanjun & Zhang, Fan, 2013. "Firm competitiveness and the European Union emissions trading scheme," Energy Policy, Elsevier, vol. 63(C), pages 1056-1064.
    10. Zhifu Mi & Jiali Zheng & Jing Meng & Jiamin Ou & Klaus Hubacek & Zhu Liu & D’Maris Coffman & Nicholas Stern & Sai Liang & Yi-Ming Wei, 2020. "Economic development and converging household carbon footprints in China," Nature Sustainability, Nature, vol. 3(7), pages 529-537, July.
    11. Hudson, John & Minea, Alexandru, 2013. "Innovation, Intellectual Property Rights, and Economic Development: A Unified Empirical Investigation," World Development, Elsevier, vol. 46(C), pages 66-78.
    12. Chang, Jun-Jie & Mi, Zhifu & Wei, Yi-Ming, 2023. "Temperature and GDP: A review of climate econometrics analysis," Structural Change and Economic Dynamics, Elsevier, vol. 66(C), pages 383-392.
    13. Kevin A. Hassett & Aparna Mathur & Gilbert E. Metcalf, 2009. "The Incidence of a U.S. Carbon Tax: A Lifetime and Regional Analysis," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2), pages 155-178.
    14. Nils Ohlendorf & Michael Jakob & Jan Christoph Minx & Carsten Schröder & Jan Christoph Steckel, 2021. "Distributional Impacts of Carbon Pricing: A Meta-Analysis," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 78(1), pages 1-42, January.
    15. Vona, Francesco, 2023. "Managing the distributional effects of climate policies: A narrow path to a just transition," Ecological Economics, Elsevier, vol. 205(C).
    16. Wu, Libo & Zhang, Shuaishuai & Qian, Haoqi, 2022. "Distributional effects of China's National Emissions Trading Scheme with an emphasis on sectoral coverage and revenue recycling," Energy Economics, Elsevier, vol. 105(C).
    17. Weng, Zhixiong & Liu, Tingting & Wu, Yufeng & Cheng, Cuiyun, 2022. "Air quality improvement effect and future contributions of carbon trading pilot programs in China," Energy Policy, Elsevier, vol. 170(C).
    18. Disna Sajeewani & Mahinda Siriwardana & Judith Mcneill, 2015. "Household Distributional And Revenue Recycling Effects Of The Carbon Price In Australia," Climate Change Economics (CCE), World Scientific Publishing Co. Pte. Ltd., vol. 6(03), pages 1-23.
    19. Li, Zhiguo & Wang, Jie, 2022. "Spatial spillover effect of carbon emission trading on carbon emission reduction: Empirical data from pilot regions in China," Energy, Elsevier, vol. 251(C).
    20. Wang, Xu & Zhu, Lei & Liu, Pengfei, 2021. "Manipulation via endowments: Quantifying the influence of market power on the emission trading scheme," Energy Economics, Elsevier, vol. 103(C).
    21. David Popp, 2019. "Environmental Policy and Innovation: A Decade of Research," NBER Working Papers 25631, National Bureau of Economic Research, Inc.
    22. Dechezleprêtre, Antoine & Nachtigall, Daniel & Venmans, Frank, 2023. "The joint impact of the European Union emissions trading system on carbon emissions and economic performance," Journal of Environmental Economics and Management, Elsevier, vol. 118(C).
    23. Dong, Zhaoyingzi & Xia, Chuyu & Fang, Kai & Zhang, Weiwen, 2022. "Effect of the carbon emissions trading policy on the co-benefits of carbon emissions reduction and air pollution control," Energy Policy, Elsevier, vol. 165(C).
    24. Zhu, Bangzhu & Zhang, Mengfan & Huang, Liqing & Wang, Ping & Su, Bin & Wei, Yi-Ming, 2020. "Exploring the effect of carbon trading mechanism on China's green development efficiency: A novel integrated approach," Energy Economics, Elsevier, vol. 85(C).
    25. Kranker, Keith, 2016. "Effects of Medicaid disease management programs on medical expenditures: Evidence from a natural experiment in Georgia," Journal of Health Economics, Elsevier, vol. 46(C), pages 52-69.
    26. Ronald Wall & Stelios Grafakos & Alberto Gianoli & Spyridon Stavropoulos, 2019. "Which policy instruments attract foreign direct investments in renewable energy?," Climate Policy, Taylor & Francis Journals, vol. 19(1), pages 59-72, January.
    27. Chen, Zhe & Song, Pei & Wang, Baolu, 2021. "Carbon emissions trading scheme, energy efficiency and rebound effect – Evidence from China's provincial data," Energy Policy, Elsevier, vol. 157(C).
    28. Raphael Calel, 2020. "Adopt or Innovate: Understanding Technological Responses to Cap-and-Trade," American Economic Journal: Economic Policy, American Economic Association, vol. 12(3), pages 170-201, August.
    29. Zhang, Shengling & Wang, Yao & Hao, Yu & Liu, Zhiwei, 2021. "Shooting two hawks with one arrow: Could China's emission trading scheme promote green development efficiency and regional carbon equality?," Energy Economics, Elsevier, vol. 101(C).
    30. Susan Athey & Guido W. Imbens, 2006. "Identification and Inference in Nonlinear Difference-in-Differences Models," Econometrica, Econometric Society, vol. 74(2), pages 431-497, March.
    31. Hu, Jing & Crijns-Graus, Wina & Lam, Long & Gilbert, Alyssa, 2015. "Ex-ante evaluation of EU ETS during 2013–2030: EU-internal abatement," Energy Policy, Elsevier, vol. 77(C), pages 152-163.
    32. David Popp, 2019. "Environmental policy and innovation: a decade of research," CESifo Working Paper Series 7544, CESifo.
    33. Zhang, Yue-Jun & Wang, Ao-Dong & Tan, Weiping, 2015. "The impact of China's carbon allowance allocation rules on the product prices and emission reduction behaviors of ETS-covered enterprises," Energy Policy, Elsevier, vol. 86(C), pages 176-185.
    34. Easwaran Narassimhan & Kelly S. Gallagher & Stefan Koester & Julio Rivera Alejo, 2018. "Carbon pricing in practice: a review of existing emissions trading systems," Climate Policy, Taylor & Francis Journals, vol. 18(8), pages 967-991, September.
    35. Jan Christoph Steckel & Sebastian Renner & Leonard Missbach, 2021. "Distributional Impacts of Carbon Pricing in Low- and Middle-Income Countries," CESifo Forum, ifo Institute - Leibniz Institute for Economic Research at the University of Munich, vol. 22(05), pages 26-32, September.
    36. Mathur, Aparna & Morris, Adele C., 2014. "Distributional effects of a carbon tax in broader U.S. fiscal reform," Energy Policy, Elsevier, vol. 66(C), pages 326-334.
    37. Xie, Rui & Hu, Guangxiao & Zhang, Youguo & Liu, Yu, 2017. "Provincial transfers of enabled carbon emissions in China: A supply-side perspective," Energy Policy, Elsevier, vol. 107(C), pages 688-697.
    38. Dai, Shufen & Qian, Yawen & He, Weijun & Wang, Chen & Shi, Tianyu, 2022. "The spatial spillover effect of China's carbon emissions trading policy on industrial carbon intensity: Evidence from a spatial difference-in-difference method," Structural Change and Economic Dynamics, Elsevier, vol. 63(C), pages 139-149.
    39. Zhu, Bangzhu & Zhang, Mengfan & Zhou, Yanhua & Wang, Ping & Sheng, Jichuan & He, Kaijian & Wei, Yi-Ming & Xie, Rui, 2019. "Exploring the effect of industrial structure adjustment on interprovincial green development efficiency in China: A novel integrated approach," Energy Policy, Elsevier, vol. 134(C).
    40. Peneder, Michael, 2003. "Industrial structure and aggregate growth," Structural Change and Economic Dynamics, Elsevier, vol. 14(4), pages 427-448, December.
    41. Popp, David, 2019. "Environmental Policy and Innovation: A Decade of Research," International Review of Environmental and Resource Economics, now publishers, vol. 13(3-4), pages 265-337, September.
    42. Li, Yan & Wei, Yigang & Zhang, Xiaoling & Tao, Yuan, 2020. "Regional and provincial CO2 emission reduction task decomposition of China's 2030 carbon emission peak based on the efficiency, equity and synthesizing principles," Structural Change and Economic Dynamics, Elsevier, vol. 53(C), pages 237-256.
    43. Moz-Christofoletti, Maria Alice & Pereda, Paula Carvalho, 2021. "Winners and losers: the distributional impacts of a carbon tax in Brazil," Ecological Economics, Elsevier, vol. 183(C).
    44. Georg Zachmann & Anta Ndoye & Jan Abrell, 2011. "Assessing the impact of the EU ETS using firm level data," Working Papers 579, Bruegel.
    45. Michael Greenstone, 2002. "The Impacts of Environmental Regulations on Industrial Activity: Evidence from the 1970 and 1977 Clean Air Act Amendments and the Census of Manufactures," Journal of Political Economy, University of Chicago Press, vol. 110(6), pages 1175-1219, December.
    46. Dissou, Yazid & Siddiqui, Muhammad Shahid, 2014. "Can carbon taxes be progressive?," Energy Economics, Elsevier, vol. 42(C), pages 88-100.
    47. Wang, Xinyue & Wang, Qing, 2021. "Research on the impact of green finance on the upgrading of China's regional industrial structure from the perspective of sustainable development," Resources Policy, Elsevier, vol. 74(C).
    48. Bruvoll, Annegrete & Larsen, Bodil Merethe, 2004. "Greenhouse gas emissions in Norway: do carbon taxes work?," Energy Policy, Elsevier, vol. 32(4), pages 493-505, March.
    49. Wang, Yizhong & Hang, Ye & Wang, Qunwei, 2022. "Joint or separate? An economic-environmental comparison of energy-consuming and carbon emissions permits trading in China," Energy Economics, Elsevier, vol. 109(C).
    50. Shimshack, Jay P. & Ward, Michael B., 2010. "Mercury advisories and household health trade-offs," Journal of Health Economics, Elsevier, vol. 29(5), pages 674-685, September.
    51. Ameyali Ramos-Castillo & Edwin J. Castellanos & Kirsty Galloway McLean, 2017. "Indigenous peoples, local communities and climate change mitigation," Climatic Change, Springer, vol. 140(1), pages 1-4, January.
    52. García-Muros, Xaquín & Morris, Jennifer & Paltsev, Sergey, 2022. "Toward a just energy transition: A distributional analysis of low-carbon policies in the USA," Energy Economics, Elsevier, vol. 105(C).
    53. Sonja Klinsky & Hadi Dowlatabadi, 2009. "Conceptualizations of justice in climate policy," Climate Policy, Taylor & Francis Journals, vol. 9(1), pages 88-108, January.
    54. Maria Alice Moz-Christofoletti & Paula Carvalho Pereda, 2021. "Winners and losers: the distributional impact of a carbon tax in Brazil," Working Papers, Department of Economics 2021_08, University of São Paulo (FEA-USP).
    55. Haozhi Pan & Jessica Page & Rui Shi & Cong Cong & Zipan Cai & Stephan Barthel & Patrik Thollander & Johan Colding & Zahra Kalantari, 2023. "Contribution of prioritized urban nature-based solutions allocation to carbon neutrality," Nature Climate Change, Nature, vol. 13(8), pages 862-870, August.
    56. Albrizio, Silvia & Kozluk, Tomasz & Zipperer, Vera, 2017. "Environmental policies and productivity growth: Evidence across industries and firms," Journal of Environmental Economics and Management, Elsevier, vol. 81(C), pages 209-226.
    57. Lea S. Svenningsen & Bo Jellesmark Thorsen, 2020. "Preferences for Distributional Impacts of Climate Policy," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 75(1), pages 1-24, January.
    58. Gianfranco Giulioni, 2011. "The product innovation process and GDP dynamics," Journal of Evolutionary Economics, Springer, vol. 21(4), pages 595-618, October.
    59. Nicola Commins & Seán Lyons & Marc Schiffbauer & Richard S.J. Tol, 2011. "Climate Policy & Corporate Behavior," The Energy Journal, , vol. 32(4), pages 51-68, October.
    60. Jan C. Steckel & Ira I. Dorband & Lorenzo Montrone & Hauke Ward & Leonard Missbach & Fabian Hafner & Michael Jakob & Sebastian Renner, 2021. "Distributional impacts of carbon pricing in developing Asia," Nature Sustainability, Nature, vol. 4(11), pages 1005-1014, November.
    61. Dong, Zhaoyingzi & Wang, Shaojian & Zhang, Weiwen & Shen, Huijun, 2022. "The dynamic effect of environmental regulation on firms’ energy consumption behavior-Evidence from China's industrial firms," Renewable and Sustainable Energy Reviews, Elsevier, vol. 156(C).
    62. Wang, Qian & Hubacek, Klaus & Feng, Kuishuang & Wei, Yi-Ming & Liang, Qiao-Mei, 2016. "Distributional effects of carbon taxation," Applied Energy, Elsevier, vol. 184(C), pages 1123-1131.
    63. Fan Zhang, 2015. "Energy Price Reform and Household Welfare: The Case of Turkey," The Energy Journal, International Association for Energy Economics, vol. 0(Number 2).
    64. Wu, Rongxin & Tan, Zhizhou & Lin, Boqiang, 2023. "Does carbon emission trading scheme really improve the CO2 emission efficiency? Evidence from China's iron and steel industry," Energy, Elsevier, vol. 277(C).
    65. Bode, Sven, 2006. "Multi-period emissions trading in the electricity sector--winners and losers," Energy Policy, Elsevier, vol. 34(6), pages 680-691, April.
    66. Park, Jun-ki & Ryu, Deockhyun & Lee, Keun, 2019. "What determines the economic size of a nation in the world: Determinants of a nation’s share in world GDP vs. per capita GDP," Structural Change and Economic Dynamics, Elsevier, vol. 51(C), pages 203-214.
    67. Michael E. Porter & Claas van der Linde, 1995. "Toward a New Conception of the Environment-Competitiveness Relationship," Journal of Economic Perspectives, American Economic Association, vol. 9(4), pages 97-118, Fall.
    68. Zhong, Sheng & Goh, Tian & Su, Bin, 2022. "Patterns and drivers of embodied carbon intensity in international exports: The role of trade and environmental policies," Energy Economics, Elsevier, vol. 114(C).
    69. Christian Huggel & Ivo Wallimann-Helmer & Dáithí Stone & Wolfgang Cramer, 2016. "Reconciling justice and attribution research to advance climate policy," Nature Climate Change, Nature, vol. 6(10), pages 901-908, October.
    Full references (including those not matched with items on IDEAS)

    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.
    1. de Bruin, Kelly & Yakut, Aykut Mert, 2024. "Efficiency–equity trade-off in the Irish carbon tax: A CGE investigation of mixed revenue recycling schemes," Economic Modelling, Elsevier, vol. 134(C).
    2. Dong, Zhaoyingzi & Liu, Haijing & Zhang, Weiwen, 2024. "The effect of information disclosure on low-carbon innovation," Energy, Elsevier, vol. 288(C).
    3. Nils Ohlendorf & Michael Jakob & Jan Christoph Minx & Carsten Schröder & Jan Christoph Steckel, 2021. "Distributional Impacts of Carbon Pricing: A Meta-Analysis," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 78(1), pages 1-42, January.
    4. Chen, Rushi & Howley, Peter & Kesidou, Effie, 2024. "The impact of ETS on productivity in developing economies: A micro-econometric evaluation with Chinese firm-level data," Energy Economics, Elsevier, vol. 131(C).
    5. Zhang, Qishi & Li, Bo & Liu, Jing-Yu & Deng, Yizhi & Zhang, Runsen & Wu, Wenchao & Geng, Yong, 2024. "Assessing the distributional impacts of ambitious carbon pricing in China's agricultural sector," Ecological Economics, Elsevier, vol. 217(C).
    6. Johne, Clara & Schröder, Enno & Ward, Hauke, 2023. "The distributional effects of a nitrogen tax: Evidence from Germany," Ecological Economics, Elsevier, vol. 208(C).
    7. Lucas Bretschger & Matthias Leuthard & Alena Miftakhova, 2024. "Boosting Sluggish Climate Policy: Endogenous Substitution, Learning, and Energy Efficiency Improvements," CER-ETH Economics working paper series 24/391, CER-ETH - Center of Economic Research (CER-ETH) at ETH Zurich.
    8. Hübler, Michael & Wiese, Malin & Braun, Marius & Damster, Johannes, 2024. "The distributional effects of CO2 pricing at home and at the border on German income groups," Resource and Energy Economics, Elsevier, vol. 77(C).
    9. Johan Lilliestam & Anthony Patt & Germán Bersalli, 2022. "On the quality of emission reductions: observed effects of carbon pricing on investments, innovation, and operational shifts. A response to van den Bergh and Savin (2021)," Environmental & Resource Economics, Springer;European Association of Environmental and Resource Economists, vol. 83(3), pages 733-758, November.
    10. Liu, Hongxun & Gao, Jinfeng & Tian, Peng & Ma, Xiaoming & Meng, Guanfei & Yang, Jingnan & Li, Zhi, 2023. "The impact of environmental regulation on productivity with co-production of goods and bads," Energy Economics, Elsevier, vol. 125(C).
    11. Marit Klemetsen & Knut Einar Rosendahl & Anja Lund Jakobsen, 2020. "The Impacts Of The Eu Ets On Norwegian Plants’ Environmental And Economic Performance," Climate Change Economics (CCE), World Scientific Publishing Co. Pte. Ltd., vol. 11(01), pages 1-32, February.
    12. Wang, Qian & Hubacek, Klaus & Feng, Kuishuang & Wei, Yi-Ming & Liang, Qiao-Mei, 2016. "Distributional effects of carbon taxation," Applied Energy, Elsevier, vol. 184(C), pages 1123-1131.
    13. Wu, Rongxin & Tan, Zhizhou & Lin, Boqiang, 2023. "Does carbon emission trading scheme really improve the CO2 emission efficiency? Evidence from China's iron and steel industry," Energy, Elsevier, vol. 277(C).
    14. Fouquet, Roger & O'Garra, Tanya, 2022. "In pursuit of progressive and effective climate policies: Comparing an air travel carbon tax and a frequent flyer levy," Energy Policy, Elsevier, vol. 171(C).
    15. Nils Ohlendorf & Michael Jakob & Jan Christoph Minx & Carsten Schröder & Jan Christoph Steckel, 2018. "Distributional Impacts of Climate Mitigation Policies - a Meta-Analysis," Discussion Papers of DIW Berlin 1776, DIW Berlin, German Institute for Economic Research.
    16. Joltreau, Eugénie & Sommerfeld, Katrin, 2016. "Why does emissions trading under the EU ETS not affect firms' competitiveness? Empirical findings from the literature," ZEW Discussion Papers 16-062, ZEW - Leibniz Centre for European Economic Research.
    17. Herwig Immervoll & Cathal O’Donoghue & Jules Linden & Denisa Sologon, 2023. "Who pays for higher carbon prices?: Illustration for Lithuania and a research agenda," OECD Social, Employment and Migration Working Papers 283, OECD Publishing.
    18. Muth, Daniel, 2023. "Pathways to stringent carbon pricing: Configurations of political economy conditions and revenue recycling strategies. A comparison of thirty national level policies," Ecological Economics, Elsevier, vol. 214(C).
    19. Ren, Shenggang & Yang, Xuanyu & Hu, Yucai & Chevallier, Julien, 2022. "Emission trading, induced innovation and firm performance," Energy Economics, Elsevier, vol. 112(C).
    20. Sun, Chuanwang & Tie, Ying & Yu, Lili, 2024. "How to achieve both environmental protection and firm performance improvement: Based on China's carbon emissions trading (CET) policy," Energy Economics, Elsevier, vol. 130(C).

    Corrections

    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:eee:energy:v:296:y:2024:i:c:s0360544224008466. 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: Catherine Liu (email available below). General contact details of provider: http://www.journals.elsevier.com/energy .

    Please note that corrections may take a couple of weeks to filter through the various RePEc services.

    IDEAS is a RePEc service. RePEc uses bibliographic data supplied by the respective publishers.