IDEAS home Printed from https://ideas.repec.org/a/eee/jbfina/v37y2013i12p5357-5372.html
   My bibliography  Save this article

Global imbalances and the intertemporal external budget constraint: A multicointegration approach

Author

Listed:
  • Camarero, Mariam
  • Carrion-i-Silvestre, Josep Lluís
  • Tamarit, Cecilio

Abstract

This paper analyzes the external solvency of a group of 23 OECD countries for the period 1970–2012. The empirical strategy adopted underlines the increasing importance of the financial channel for the external adjustment as proposed in Gourinchas and Rey (2007). We unify the traditional approaches to testing for external sustainability considering the stock-flow system created by the variables representing the external relationships of an open economy. External sustainability is tested using several types of cointegration and multicointegration tests. The results obtained point to weak sustainability in the flows analysis, whereas some degree of strong sustainability is found for up to six countries in the stock-flow approach. Among these countries we find both non-European economies, such as Japan and New Zealand, and Euro-area members, especially those with more restricted access to financing in the international markets.

Suggested Citation

  • Camarero, Mariam & Carrion-i-Silvestre, Josep Lluís & Tamarit, Cecilio, 2013. "Global imbalances and the intertemporal external budget constraint: A multicointegration approach," Journal of Banking & Finance, Elsevier, vol. 37(12), pages 5357-5372.
  • Handle: RePEc:eee:jbfina:v:37:y:2013:i:12:p:5357-5372
    DOI: 10.1016/j.jbankfin.2013.01.008
    as

    Download full text from publisher

    File URL: http://www.sciencedirect.com/science/article/pii/S0378426613000332
    Download Restriction: Full text for ScienceDirect subscribers only

    File URL: https://libkey.io/10.1016/j.jbankfin.2013.01.008?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 look for a different version below or search for a different version of it.

    Other versions of this item:

    References listed on IDEAS

    as
    1. Carrion-i-Silvestre, Josep Lluís & Kim, Dukpa & Perron, Pierre, 2009. "Gls-Based Unit Root Tests With Multiple Structural Breaks Under Both The Null And The Alternative Hypotheses," Econometric Theory, Cambridge University Press, vol. 25(6), pages 1754-1792, December.
    2. Lane, Philip R. & Milesi-Ferretti, Gian Maria, 2001. "The external wealth of nations: measures of foreign assets and liabilities for industrial and developing countries," Journal of International Economics, Elsevier, vol. 55(2), pages 263-294, December.
    3. Henning Bohn, 1998. "The Behavior of U. S. Public Debt and Deficits," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 113(3), pages 949-963.
    4. Lane, Philip R. & Milesi-Ferretti, Gian Maria, 2002. "External wealth, the trade balance, and the real exchange rate," European Economic Review, Elsevier, vol. 46(6), pages 1049-1071, June.
    5. Glick, Reuven & Rogoff, Kenneth, 1995. "Global versus country-specific productivity shocks and the current account," Journal of Monetary Economics, Elsevier, vol. 35(1), pages 159-192, February.
    6. Pierre-Olivier Gourinchas & Hélène Rey, 2007. "International Financial Adjustment," Journal of Political Economy, University of Chicago Press, vol. 115(4), pages 665-703, August.
    7. Corsetti, Giancarlo & Roubini, Nouriel, 1991. "Fiscal deficits, public debt, and government solvency: Evidence from OECD countries," Journal of the Japanese and International Economies, Elsevier, vol. 5(4), pages 354-380, December.
    8. Sebastian Edwards, 2002. "Does the Current Account Matter?," NBER Chapters, in: Preventing Currency Crises in Emerging Markets, pages 21-76, National Bureau of Economic Research, Inc.
    9. Mariam Camarero & Josep Lluís Carrion-i-Silvestre & Cecilio Tamarit, 2010. "External imbalances in a monetary union. Does the Lawson doctrine apply to Europe?," Working Papers 10-09, Asociación Española de Economía y Finanzas Internacionales.
    10. N/A, 2011. "Balance of Payments," Foreign Trade Review, , vol. 45(4), pages 73-104, January.
    11. Ricardo J. Caballero & Emmanuel Farhi & Pierre-Olivier Gourinchas, 2008. "An Equilibrium Model of "Global Imbalances" and Low Interest Rates," American Economic Review, American Economic Association, vol. 98(1), pages 358-393, March.
    12. Fountas Stilianos & Wu Jyh-Lin, 1999. "Are the U.S. Current Account Deficits Really Sustainable?," International Economic Journal, Taylor & Francis Journals, vol. 13(3), pages 51-58.
    13. Haldrup, Niels, 1994. "The asymptotics of single-equation cointegration regressions with I(1) and I(2) variables," Journal of Econometrics, Elsevier, vol. 63(1), pages 153-181, July.
    14. Hans-Werner Sinn & Timo Wollmershäuser, 2012. "Target loans, current account balances and capital flows: the ECB’s rescue facility," International Tax and Public Finance, Springer;International Institute of Public Finance, vol. 19(4), pages 468-508, August.
    15. Engle, Robert & Granger, Clive, 2015. "Co-integration and error correction: Representation, estimation, and testing," Applied Econometrics, Russian Presidential Academy of National Economy and Public Administration (RANEPA), vol. 39(3), pages 106-135.
    16. Husted, Steven, 1992. "The Emerging U.S. Current Account Deficit in the 1980s: A Cointegration Analysis," The Review of Economics and Statistics, MIT Press, vol. 74(1), pages 159-166, February.
    17. Engsted, Tom & Gonzalo, Jesus & Haldrup, Niels, 1997. "Testing for multicointegration," Economics Letters, Elsevier, vol. 56(3), pages 259-266, November.
    18. Cédric Tille, 2003. "The impact of exchange rate movements on U.S. foreign debt," Current Issues in Economics and Finance, Federal Reserve Bank of New York, vol. 9(Jan).
    19. Andrews, Donald W K & Ploberger, Werner, 1994. "Optimal Tests When a Nuisance Parameter Is Present Only under the Alternative," Econometrica, Econometric Society, vol. 62(6), pages 1383-1414, November.
    20. Ahmed, Shaghil & Rogers, John H., 1995. "Government budget deficits and trade deficits Are present value constraints satisfied in long-term data?," Journal of Monetary Economics, Elsevier, vol. 36(2), pages 351-374, November.
    21. Arize, Augustine C., 2002. "Imports and exports in 50 countries: Tests of cointegration and structural breaks," International Review of Economics & Finance, Elsevier, vol. 11(1), pages 101-115, April.
    22. Milesi-Ferretti, G-M & Razin, A, 1996. "Current-Account Sustainability," Princeton Studies in International Economics 81, International Economics Section, Departement of Economics Princeton University,.
    23. Lane, Philip R. & Milesi-Ferretti, Gian Maria, 2007. "The external wealth of nations mark II: Revised and extended estimates of foreign assets and liabilities, 1970-2004," Journal of International Economics, Elsevier, vol. 73(2), pages 223-250, November.
    24. Maurice Obstfeld & Kenneth S. Rogoff, 2009. "Global imbalances and the financial crisis: products of common causes," Proceedings, Federal Reserve Bank of San Francisco, issue Oct, pages 131-172.
    25. Charles Engel & John H Rogers, 2009. "Expected Consumption Growth from Cross-Country Surveys: Implications for Assessing International Capital Markets," IMF Staff Papers, Palgrave Macmillan, vol. 56(3), pages 543-573, August.
    26. Bora Durdu & Enrique G. Mendoza & Marco E. Terrones, 2009. "On the solvency of nations: are global imbalances consistent with intertemporal budget constraints?," International Finance Discussion Papers 975, Board of Governors of the Federal Reserve System (U.S.).
    27. Gregory, Allan W. & Hansen, Bruce E., 1996. "Residual-based tests for cointegration in models with regime shifts," Journal of Econometrics, Elsevier, vol. 70(1), pages 99-126, January.
    28. Bohn, Henning, 1995. "The Sustainability of Budget Deficits in a Stochastic Economy," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 27(1), pages 257-271, February.
    29. Vanessa Berenguer‐Rico & Josep Lluís Carrion‐i‐Silvestre, 2011. "Regime shifts in stock–flow I(2)–I(1) systems: the case of US fiscal sustainability," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 26(2), pages 298-321, March.
    30. Nason, James M. & Rogers, John H., 2006. "The present-value model of the current account has been rejected: Round up the usual suspects," Journal of International Economics, Elsevier, vol. 68(1), pages 159-187, January.
    31. Johansen, Soren, 1991. "Estimation and Hypothesis Testing of Cointegration Vectors in Gaussian Vector Autoregressive Models," Econometrica, Econometric Society, vol. 59(6), pages 1551-1580, November.
    32. Quintos, Carmela E, 1995. "Sustainability of the Deficit Process with Structural Shifts," Journal of Business & Economic Statistics, American Statistical Association, vol. 13(4), pages 409-417, October.
    33. Josep Lluís Carrion‐i‐Silvestre & Andreu Sansó, 2006. "Testing the Null of Cointegration with Structural Breaks," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 68(5), pages 623-646, October.
    34. Johansen, Soren, 1988. "Statistical analysis of cointegration vectors," Journal of Economic Dynamics and Control, Elsevier, vol. 12(2-3), pages 231-254.
    35. Paresh Kumar Narayan & Seema Narayan, 2005. "Are exports and imports cointegrated? Evidence from 22 least developed countries," Applied Economics Letters, Taylor & Francis Journals, vol. 12(6), pages 375-378.
    36. Michael A. Kouparitsas, 2005. "Is the U.S. current account sustainable?," Chicago Fed Letter, Federal Reserve Bank of Chicago, issue Jun.
    37. Gian Maria Milesi-Ferretti & Assaf Razin, 1996. "Sustainability of Persistent Current Account Deficits," NBER Working Papers 5467, National Bureau of Economic Research, Inc.
    38. Perron, Pierre, 1989. "The Great Crash, the Oil Price Shock, and the Unit Root Hypothesis," Econometrica, Econometric Society, vol. 57(6), pages 1361-1401, November.
    39. Trehan, Bharat & Walsh, Carl E, 1991. "Testing Intertemporal Budget Constraints: Theory and Applications to U.S. Federal Budget and Current Account Deficits," Journal of Money, Credit and Banking, Blackwell Publishing, vol. 23(2), pages 206-223, May.
    40. Irandoust Manuchehr & Sjoo Boo, 2000. "The Behavior of the Current Account in Response to Unobservable and Observable Shocks," International Economic Journal, Taylor & Francis Journals, vol. 14(4), pages 41-57.
    41. Perron, Pierre & Yabu, Tomoyoshi, 2009. "Testing for Shifts in Trend With an Integrated or Stationary Noise Component," Journal of Business & Economic Statistics, American Statistical Association, vol. 27(3), pages 369-396.
    42. Johansen, Soren, 1995. "Likelihood-Based Inference in Cointegrated Vector Autoregressive Models," OUP Catalogue, Oxford University Press, number 9780198774501, December.
    43. Leachman, Lori L. & Francis, Bill B., 2000. "Multicointegration Analysis of the Sustainability of Foreign Debt," Journal of Macroeconomics, Elsevier, vol. 22(2), pages 207-227, April.
    44. Dierk Herzer & Nowak-Lehmann Felicitas, 2006. "Is there a long-run relationship between exports and imports in Chile?," Applied Economics Letters, Taylor & Francis Journals, vol. 13(15), pages 981-986.
    45. Serena Ng & Pierre Perron, 2001. "LAG Length Selection and the Construction of Unit Root Tests with Good Size and Power," Econometrica, Econometric Society, vol. 69(6), pages 1519-1554, November.
    46. Gregory, Allan W & Hansen, Bruce E, 1996. "Tests for Cointegration in Models with Regime and Trend Shifts," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 58(3), pages 555-560, August.
    47. Alan M. Taylor, 2002. "A Century Of Purchasing-Power Parity," The Review of Economics and Statistics, MIT Press, vol. 84(1), pages 139-150, February.
    48. Fisher, Eric O'N, 1995. "A New Way of Thinking about the Current Account," International Economic Review, Department of Economics, University of Pennsylvania and Osaka University Institute of Social and Economic Research Association, vol. 36(3), pages 555-568, August.
    49. Fisher, Eric O'n., 1990. "Sustainable balance of trade deficits," Journal of Monetary Economics, Elsevier, vol. 25(3), pages 411-430, June.
    50. Shigeyuki Hamori, 2009. "The sustainability of trade accounts of the G-7 countries," Applied Economics Letters, Taylor & Francis Journals, vol. 16(17), pages 1691-1694.
    51. Lane, Philip & Milesi-Ferretti, Gian Maria, "undated". "External Wealth of Nations," Instructional Stata datasets for econometrics extwealth, Boston College Department of Economics.
    52. Wickens, M. R. & Uctum, Merih, 1993. "The sustainability of current account deficits : A test of the US intertemporal budget constraint," Journal of Economic Dynamics and Control, Elsevier, vol. 17(3), pages 423-441, May.
    53. Phillips, Peter C B & Ouliaris, S, 1990. "Asymptotic Properties of Residual Based Tests for Cointegration," Econometrica, Econometric Society, vol. 58(1), pages 165-193, January.
    54. Bohn, Henning, 2007. "Are stationarity and cointegration restrictions really necessary for the intertemporal budget constraint?," Journal of Monetary Economics, Elsevier, vol. 54(7), pages 1837-1847, October.
    55. Manuchehr Irandoust & Johan Ericsson, 2004. "Are Imports and Exports Cointegrated? An International Comparison," Metroeconomica, Wiley Blackwell, vol. 55(1), pages 49-64, February.
    56. Escario, Regina & Gadea, María Dolores & Sabaté, Marcela, 2012. "Multicointegration, seigniorage and fiscal sustainability. Spain 1857–2000," Journal of Policy Modeling, Elsevier, vol. 34(2), pages 270-283.
    Full references (including those not matched with items on IDEAS)

    Citations

    Citations are extracted by the CitEc Project, subscribe to its RSS feed for this item.
    as


    Cited by:

    1. António Afonso & Florence Huart & João Tovar Jalles & Piotr Stanek, 2019. "Assessing the sustainability of external imbalances in the European Union," The World Economy, Wiley Blackwell, vol. 42(2), pages 320-348, February.
    2. Vassilis Monastiriotis & Cigdem Borke Tunali, 2020. "The Sustainability of External Imbalances in the European Periphery," Open Economies Review, Springer, vol. 31(2), pages 273-294, April.
    3. Mariam Camarero & Josep Lluís Carrion‐i‐Silvestre & Cecilio Tamarit, 2021. "External imbalances from a GVAR perspective," The World Economy, Wiley Blackwell, vol. 44(11), pages 3202-3245, November.
    4. António Afonso & Florence Huart & João Tovar Jalles & Piotr Stanek, 2020. "Long-run relationship between exports and imports: current account sustainability tests for the EU," Portuguese Economic Journal, Springer;Instituto Superior de Economia e Gestao, vol. 19(2), pages 155-170, May.
    5. Mariam Camarero & María Dolores Gadea-Rivas & Ana Gómez-Loscos & Cecilio Tamarit, 2019. "External imbalances and recoveries," Working Papers 1912, Department of Applied Economics II, Universidad de Valencia.
    6. Tarlok Singh, 2017. "Are Current Account Deficits in the OECD Countries Sustainable? Robust Evidence from Time-Series Estimators," The International Trade Journal, Taylor & Francis Journals, vol. 31(1), pages 29-64, January.
    7. Chen, Shyh-Wei & Wu, An-Chi, 2018. "Is there a bubble component in government debt? New international evidence," International Review of Economics & Finance, Elsevier, vol. 58(C), pages 467-486.
    8. Vicente Esteve & María A. Prats, 2023. "External sustainability in Spanish economy: Bubbles and crises, 1970–2020," Review of International Economics, Wiley Blackwell, vol. 31(1), pages 60-80, February.
    9. Camarero, Mariam & Gadea-Rivas, María Dolores & Gómez-Loscos, Ana & Tamarit, Cecilio, 2021. "Effects of external imbalances on GDP recovery patterns," Journal of Economic Behavior & Organization, Elsevier, vol. 182(C), pages 349-362.
    10. Issiaka Coulibaly & Blaise Gnimassoun, 2013. "Current account sustainability in Sub-Saharan Africa: Does the exchange rate regime matter?," Working Papers hal-04141160, HAL.
    11. Gnimassoun, Blaise & Coulibaly, Issiaka, 2014. "Current account sustainability in Sub-Saharan Africa: Does the exchange rate regime matter?," Economic Modelling, Elsevier, vol. 40(C), pages 208-226.
    12. Mariam Camarero & Josep Lluís Carrion-i-Silvestre & Cecilio Tamarit, 2021. "Análisis de la sostenibilidad del sector exterior en la OCDE con técnicas de multicointegración," Working Papers 2112, Department of Applied Economics II, Universidad de Valencia.
    13. Singh Tarlok, 2017. "Sustainability of Current Account Deficits in the OECD Countries: Evidence from Panel Data Estimators," Global Economy Journal, De Gruyter, vol. 17(4), pages 1-16, December.
    14. Branimir Skoko & Pero Zovko, 2018. "Sustainability of Bosnia and Herzegovina’s international trade flows," Notitia - journal for economic, business and social issues, Notitia Ltd., vol. 1(4), pages 1-8, December.
    15. Vicente Esteve & María A. Prats, 2022. "Can a country borrow forever? The unsustainable trajectory of international debt: the case of Spain," Working Papers 2202, Department of Applied Economics II, Universidad de Valencia.
    16. Koch, Cathérine Tahmee, 2014. "Risky adjustments or adjustments to risks: Decomposing bank leverage," Journal of Banking & Finance, Elsevier, vol. 45(C), pages 242-254.

    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. Mariam Camarero & Josep Lluís Carrion-i-Silvestre & Cecilio Tamarit, 2021. "Análisis de la sostenibilidad del sector exterior en la OCDE con técnicas de multicointegración," Working Papers 2112, Department of Applied Economics II, Universidad de Valencia.
    2. Tomás Barrio & Mariam Camarero & Cecilio Tamarit, 2019. "Testing for Periodic Integration with a Changing Mean," Computational Economics, Springer;Society for Computational Economics, vol. 54(1), pages 45-75, June.
    3. Juan Carlos Cuestas & Luis A. Gil-Alana & Laura Sauci, 2020. "Public finances in the EU-27: Are they sustainable?," Empirica, Springer;Austrian Institute for Economic Research;Austrian Economic Association, vol. 47(1), pages 181-204, February.
    4. Mariam Camarero & Josep Lluís Carrion-i-Silvestre & Cecilio Tamarit, 2010. "External imbalances in a monetary union. Does the Lawson doctrine apply to Europe?," Working Papers 10-09, Asociación Española de Economía y Finanzas Internacionales.
    5. Tahir Mukhtar & Aliya H. Khan, 2016. "The Current Account Deficit Sustainability: An Empirical Investigation for Pakistan," The Pakistan Development Review, Pakistan Institute of Development Economics, vol. 55(4), pages 397-419.
    6. Vassilis Monastiriotis & Cigdem Borke Tunali, 2020. "The Sustainability of External Imbalances in the European Periphery," Open Economies Review, Springer, vol. 31(2), pages 273-294, April.
    7. Oscar Bajo-Rubio & Carmen D Roldᮠ & Esteve, 2014. "Sustainability of external imbalances in the OECD countries," Applied Economics, Taylor & Francis Journals, vol. 46(4), pages 441-449, February.
    8. Mariam Camarero & Josep Lluís Carrion-i-Silvestre & Cecilio Tamarit, 2013. "“The relationship between debt level and fiscal sustainability in OECD countries”," IREA Working Papers 201315, University of Barcelona, Research Institute of Applied Economics, revised Sep 2013.
    9. Tomas del Barrio Castro & Mariam Camarero & Cecilio Tamarit, 2013. "The trade balance in euro countries: a natural case study of periodic integration with a changing mean," Working Papers 1321, Department of Applied Economics II, Universidad de Valencia.
    10. Garg, Bhavesh & Prabheesh, K.P., 2021. "Testing the intertemporal sustainability of current account in the presence of endogenous structural breaks: Evidence from the top deficit countries," Economic Modelling, Elsevier, vol. 97(C), pages 365-379.
    11. Tarlok Singh, 2017. "Are Current Account Deficits in the OECD Countries Sustainable? Robust Evidence from Time-Series Estimators," The International Trade Journal, Taylor & Francis Journals, vol. 31(1), pages 29-64, January.
    12. Giancarlo Corsetti & Panagiotis T. Konstantinou, 2012. "What Drives US Foreign Borrowing? Evidence on the External Adjustment to Transitory and Permanent Shocks," American Economic Review, American Economic Association, vol. 102(2), pages 1062-1092, April.
    13. António Afonso & João Tovar Jalles, 2012. "Revisiting fiscal sustainability: panel cointegration and structural breaks in OECD countries," Working Papers Department of Economics 2012/29, ISEG - Lisbon School of Economics and Management, Department of Economics, Universidade de Lisboa.
    14. Leachman, Lori L. & Francis, Bill B., 2000. "Multicointegration Analysis of the Sustainability of Foreign Debt," Journal of Macroeconomics, Elsevier, vol. 22(2), pages 207-227, April.
    15. Chen, Shyh-Wei & Wu, An-Chi, 2018. "Is there a bubble component in government debt? New international evidence," International Review of Economics & Finance, Elsevier, vol. 58(C), pages 467-486.
    16. Nag, Biswajit & Mukherjee, Jaydeep, 2012. "The sustainability of trade deficits in the presence of endogenous structural breaks: Evidence from the Indian economy," Journal of Asian Economics, Elsevier, vol. 23(5), pages 519-526.
    17. Tomas Barrio Castro & Mariam Camarero & Cecilio Tamarit, 2015. "An analysis of the trade balance for OECD countries using periodic integration and cointegration," Empirical Economics, Springer, vol. 49(2), pages 389-402, September.
    18. H seyin Kalyoncu & Muhittin Kaplan, 2014. "Analyzing the Sustainability of Current Account in ASEAN Countries: Test of Intertemporal Borrowing Constraints," International Journal of Economics and Financial Issues, Econjournals, vol. 4(3), pages 564-571.
    19. Neto, David, 2020. "Tracking fiscal discipline. Looking for a PIIGS on the wing," International Economics, Elsevier, vol. 163(C), pages 147-154.
    20. António Afonso & João Jalles, 2014. "A longer-run perspective on fiscal sustainability," Empirica, Springer;Austrian Institute for Economic Research;Austrian Economic Association, vol. 41(4), pages 821-847, November.

    More about this item

    Keywords

    Current account; Net foreign assets; Multicointegration; Structural breaks;
    All these keywords.

    JEL classification:

    • F32 - International Economics - - International Finance - - - Current Account Adjustment; Short-term Capital Movements
    • F36 - International Economics - - International Finance - - - Financial Aspects of Economic Integration
    • F37 - International Economics - - International Finance - - - International Finance Forecasting and Simulation: Models and Applications
    • C22 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Time-Series Models; Dynamic Quantile Regressions; Dynamic Treatment Effect Models; Diffusion Processes

    Statistics

    Access and download statistics

    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:jbfina:v:37:y:2013:i:12:p:5357-5372. 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.elsevier.com/locate/jbf .

    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.