IDEAS home Printed from https://ideas.repec.org/p/rdg/emxxdp/em-dp2019-11.html
   My bibliography  Save this paper

Geopolitical Risk and R&D investment

Author

Listed:
  • Wei-Fong Pan

    (Department of Economics, University of Reading)

Abstract

Although most empirical studies conclude that uncertainty delays firms' investments based on real options theory, empirical evidence regarding the impact of uncertainty on innovation is mixed. This study examines the impact of geopolitical risk (GPR) on corporate research and development (R&D) investment using newly developed indices. We find a negative relationship between GPR and R&D investment. The R&D investment rapidly drops and rebounds several quarters after high GPR. The impact of GPR is most significant for high-tech firms, small firms, and firms with high growth options. However, when GPRs are realised, these significant and negative effects disappear. These results are shown to be robust after controlling for firm characteristics, macroeconomic environment, other uncertainty measures, time, and alternative GPR and R&D measures, as well as considering the simultaneity and endogeneity issues. Overall, our study suggests that GPR plays a key role in determining R&D investment.

Suggested Citation

  • Wei-Fong Pan, 2019. "Geopolitical Risk and R&D investment," Economics Discussion Papers em-dp2019-11, Department of Economics, University of Reading.
    • Handle: RePEc:rdg:emxxdp:em-dp2019-11
    as

    Download full text from publisher

    File URL: http://www.reading.ac.uk/web/FILES/economics/emdp201911.pdf
    Download Restriction: no
    ---><---

    References listed on IDEAS

    as
    1. N. Bloom, 2016. "Fluctuations in uncertainty," Voprosy Ekonomiki, NP Voprosy Ekonomiki, issue 4.
    2. Bhattacharya, Utpal & Hsu, Po-Hsuan & Tian, Xuan & Xu, Yan, 2017. "What Affects Innovation More: Policy or Policy Uncertainty?," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 52(5), pages 1869-1901, October.
    3. Gustavo Manso, 2011. "Motivating Innovation," Journal of Finance, American Finance Association, vol. 66(5), pages 1823-1860, October.
    4. Dario Caldara & Matteo Iacoviello, 2022. "Measuring Geopolitical Risk," American Economic Review, American Economic Association, vol. 112(4), pages 1194-1225, April.
    5. Julian Atanassov, 2013. "Do Hostile Takeovers Stifle Innovation? Evidence from Antitakeover Legislation and Corporate Patenting," Journal of Finance, American Finance Association, vol. 68(3), pages 1097-1131, June.
    6. Fama, Eugene F & French, Kenneth R, 1992. "The Cross-Section of Expected Stock Returns," Journal of Finance, American Finance Association, vol. 47(2), pages 427-465, June.
    7. Holmstrom, Bengt, 1989. "Agency costs and innovation," Journal of Economic Behavior & Organization, Elsevier, vol. 12(3), pages 305-327, December.
    8. Hertzel, Michael G. & Li, Zhi, 2010. "Behavioral and Rational Explanations of Stock Price Performance around SEOs: Evidence from a Decomposition of Market-to-Book Ratios," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 45(4), pages 935-958, August.
    9. Abadie, Alberto & Gardeazabal, Javier, 2008. "Terrorism and the world economy," European Economic Review, Elsevier, vol. 52(1), pages 1-27, January.
    10. Rodrik, Dani, 1991. "Policy uncertainty and private investment in developing countries," Journal of Development Economics, Elsevier, vol. 36(2), pages 229-242, October.
    11. Philippe Aghion & John Van Reenen & Luigi Zingales, 2013. "Innovation and Institutional Ownership," American Economic Review, American Economic Association, vol. 103(1), pages 277-304, February.
    12. Philippe Aghion & Philippe Askenazy & Nicolas Berman & Gilbert Cette & Laurent Eymard, 2012. "Credit Constraints And The Cyclicality Of R&D Investment: Evidence From France," Journal of the European Economic Association, European Economic Association, vol. 10(5), pages 1001-1024, October.
    13. Funke, Manuel & Schularick, Moritz & Trebesch, Christoph, 2016. "Going to extremes: Politics after financial crises, 1870–2014," European Economic Review, Elsevier, vol. 88(C), pages 227-260.
    14. Nicholas Bloom & Max Floetotto & Nir Jaimovich & Itay Saporta†Eksten & Stephen J. Terry, 2018. "Really Uncertain Business Cycles," Econometrica, Econometric Society, vol. 86(3), pages 1031-1065, May.
    15. Nick Bloom, 2007. "Uncertainty and the Dynamics of R&D," American Economic Review, American Economic Association, vol. 97(2), pages 250-255, May.
    16. Bloom, Nick & Griffith, Rachel & Van Reenen, John, 2002. "Do R&D tax credits work? Evidence from a panel of countries 1979-1997," Journal of Public Economics, Elsevier, vol. 85(1), pages 1-31, July.
    17. Bradley, Daniel & Pantzalis, Christos & Yuan, Xiaojing, 2016. "Policy risk, corporate political strategies, and the cost of debt," Journal of Corporate Finance, Elsevier, vol. 40(C), pages 254-275.
    18. Arellano, Manuel & Bover, Olympia, 1995. "Another look at the instrumental variable estimation of error-components models," Journal of Econometrics, Elsevier, vol. 68(1), pages 29-51, July.
    19. Waisman, Maya & Ye, Pengfei & Zhu, Yun, 2015. "The effect of political uncertainty on the cost of corporate debt," Journal of Financial Stability, Elsevier, vol. 16(C), pages 106-117.
    20. Avinash K. Dixit & Robert S. Pindyck, 1994. "Investment under Uncertainty," Economics Books, Princeton University Press, edition 1, number 5474.
    21. Christopher W. Anderson & Luis Garcia‐Feijóo, 2006. "Empirical Evidence on Capital Investment, Growth Options, and Security Returns," Journal of Finance, American Finance Association, vol. 61(1), pages 171-194, February.
    22. Feng, Xunan & Johansson, Anders C., 2017. "Political Uncertainty and Innovation in China," Stockholm School of Economics Asia Working Paper Series 2017-44, Stockholm School of Economics, Stockholm China Economic Research Institute.
    23. Robert E. Hoskisson & Michael A. Hitt, 1988. "Strategic control systems and relative r&d investment in large multiproduct firms," Strategic Management Journal, Wiley Blackwell, vol. 9(6), pages 605-621, November.
    24. Hirschey, Mark & Skiba, Hilla & Wintoki, M. Babajide, 2012. "The size, concentration and evolution of corporate R&D spending in U.S. firms from 1976 to 2010: Evidence and implications," Journal of Corporate Finance, Elsevier, vol. 18(3), pages 496-518.
    25. Acs, Zoltan J & Audretsch, David B, 1988. "Innovation in Large and Small Firms: An Empirical Analysis," American Economic Review, American Economic Association, vol. 78(4), pages 678-690, September.
    26. Bean, Charles R., 1990. "Endogenous growth and the procyclical behaviour of productivity," European Economic Review, Elsevier, vol. 34(2-3), pages 355-363, May.
    27. Daniel J. Wilson, 2009. "Beggar Thy Neighbor? The In-State, Out-of-State, and Aggregate Effects of R&D Tax Credits," The Review of Economics and Statistics, MIT Press, vol. 91(2), pages 431-436, May.
    28. Hall, Bronwyn H. & Lerner, Josh, 2010. "The Financing of R&D and Innovation," Handbook of the Economics of Innovation, in: Bronwyn H. Hall & Nathan Rosenberg (ed.), Handbook of the Economics of Innovation, edition 1, volume 1, chapter 0, pages 609-639, Elsevier.
    29. Scott R. Baker & Nicholas Bloom & Steven J. Davis, 2016. "Measuring Economic Policy Uncertainty," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 131(4), pages 1593-1636.
    30. Acs, Zoltan J & Audretsch, David B & Feldman, Maryann P, 1994. "R&D Spillovers and Recipient Firm Size," The Review of Economics and Statistics, MIT Press, vol. 76(2), pages 336-340, May.
    31. Dongmei Li, 2011. "Financial Constraints, R&D Investment, and Stock Returns," The Review of Financial Studies, Society for Financial Studies, vol. 24(9), pages 2974-3007.
    32. Gu, Lifeng, 2016. "Product market competition, R&D investment, and stock returns," Journal of Financial Economics, Elsevier, vol. 119(2), pages 441-455.
    33. Kyle Jurado & Sydney C. Ludvigson & Serena Ng, 2015. "Measuring Uncertainty," American Economic Review, American Economic Association, vol. 105(3), pages 1177-1216, March.
    34. Himmelberg, Charles P & Petersen, Bruce C, 1994. "R&D and Internal Finance: A Panel Study of Small Firms in High-Tech Industries," The Review of Economics and Statistics, MIT Press, vol. 76(1), pages 38-51, February.
    35. Aghion, P. & Askenazy, P. & Berman, N. & Cette, G. & Eymard, L., 2008. "Credit Constraints and the Cyclicality of R&D Investment: Evidence from France," Working papers 198, Banque de France.
    36. Rao, Nirupama, 2016. "Do tax credits stimulate R&D spending? The effect of the R&D tax credit in its first decade," Journal of Public Economics, Elsevier, vol. 140(C), pages 1-12.
    37. Ben S. Bernanke, 1983. "Irreversibility, Uncertainty, and Cyclical Investment," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 98(1), pages 85-106.
    38. Nicholas Bloom, 2009. "The Impact of Uncertainty Shocks," Econometrica, Econometric Society, vol. 77(3), pages 623-685, May.
    39. Brown, James R. & Martinsson, Gustav & Petersen, Bruce C., 2012. "Do financing constraints matter for R&D?," European Economic Review, Elsevier, vol. 56(8), pages 1512-1529.
    40. Philippe Aghion & Jean Tirole, 1994. "The Management of Innovation," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 109(4), pages 1185-1209.
    41. David Hirshleifer & Angie Low & Siew Hong Teoh, 2012. "Are Overconfident CEOs Better Innovators?," Journal of Finance, American Finance Association, vol. 67(4), pages 1457-1498, August.
    42. Todd M. Alessandri & Tony W. Tong & Jeffrey J. Reuer, 2012. "Firm heterogeneity in growth option value: The role of managerial incentives," Strategic Management Journal, Wiley Blackwell, vol. 33(13), pages 1557-1566, December.
    43. Blundell, Richard & Bond, Stephen, 1998. "Initial conditions and moment restrictions in dynamic panel data models," Journal of Econometrics, Elsevier, vol. 87(1), pages 115-143, August.
    44. Robert McDonald & Daniel Siegel, 1986. "The Value of Waiting to Invest," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 101(4), pages 707-727.
    45. Daniel Ferreira & Gustavo Manso & André C. Silva, 2014. "Incentives to Innovate and the Decision to Go Public or Private," The Review of Financial Studies, Society for Financial Studies, vol. 27(1), pages 256-300, January.
    46. Mitchell A. Petersen, 2009. "Estimating Standard Errors in Finance Panel Data Sets: Comparing Approaches," The Review of Financial Studies, Society for Financial Studies, vol. 22(1), pages 435-480, January.
    47. Helen Weeds, 2002. "Strategic Delay in a Real Options Model of R&D Competition," The Review of Economic Studies, Review of Economic Studies Ltd, vol. 69(3), pages 729-747.
    48. Çolak, Gönül & Durnev, Art & Qian, Yiming, 2017. "Political Uncertainty and IPO Activity: Evidence from U.S. Gubernatorial Elections," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 52(6), pages 2523-2564, December.
    49. Alberto Abadie & Javier Gardeazabal, 2003. "The Economic Costs of Conflict: A Case Study of the Basque Country," American Economic Review, American Economic Association, vol. 93(1), pages 113-132, March.
    50. Sapra, Haresh & Subramanian, Ajay & Subramanian, Krishnamurthy V., 2014. "Corporate Governance and Innovation: Theory and Evidence," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 49(4), pages 957-1003, August.
    51. Caballero, Ricardo J, 1991. "On the Sign of the Investment-Uncertainty Relationship," American Economic Review, American Economic Association, vol. 81(1), pages 279-288, March.
    52. Jens, Candace E., 2017. "Political uncertainty and investment: Causal evidence from U.S. gubernatorial elections," Journal of Financial Economics, Elsevier, vol. 124(3), pages 563-579.
    53. Melolinna, Marko & Tatomir, Srdan & Miller, Helen, 2018. "Business investment, cost of capital and uncertainty in the United Kingdom — evidence from firm-level analysis," Bank of England working papers 717, Bank of England.
    54. Robert Novy-Marx, 2007. "An Equilibrium Model of Investment Under Uncertainty," The Review of Financial Studies, Society for Financial Studies, vol. 20(5), pages 1461-1502, 2007 29.
    55. Zoltan Acs & David Audretsch, 1990. "Innovation and Small Firms," MIT Press Books, The MIT Press, edition 1, volume 1, number 0262011131, December.
    56. Eduardo S. Schwartz, 2004. "Patents and R&D as Real Options," Economic Notes, Banca Monte dei Paschi di Siena SpA, vol. 33(1), pages 23-54, February.
    57. Nalin Kulatilaka & Enrico C. Perotti, 1998. "Strategic Growth Options," Management Science, INFORMS, vol. 44(8), pages 1021-1031, August.
    58. Bronwyn H. Hall & Nathan Rosenberg (ed.), 2010. "Handbook of the Economics of Innovation," Handbook of the Economics of Innovation, Elsevier, edition 1, volume 1, number 1.
    59. Gali, J. & Hammour, J.L., 1992. "Long Run Effects of Business Cycles," Papers 92-26, Columbia - Graduate School of Business.
    60. Mason, Robin & Weeds, Helen, 2010. "Investment, uncertainty and pre-emption," International Journal of Industrial Organization, Elsevier, vol. 28(3), pages 278-287, May.
    61. Thorsten Beck & Asli Demirgüç‐Kunt & Vojislav Maksimovic, 2005. "Financial and Legal Constraints to Growth: Does Firm Size Matter?," Journal of Finance, American Finance Association, vol. 60(1), pages 137-177, February.
    62. Gary S. Becker & Yona Rubinstein, 2011. "Fear and the Response to Terrorism: An Economic Analysis," CEP Discussion Papers dp1079, Centre for Economic Performance, LSE.
    63. Julian Atanassov, 2016. "Arm’s Length Financing and Innovation: Evidence from Publicly Traded Firms," Management Science, INFORMS, vol. 62(1), pages 128-155, January.
    64. Holmström, Bengt, 1989. "Agency Costs and Innovation," Working Paper Series 214, Research Institute of Industrial Economics.
    65. Brown, James R. & Petersen, Bruce C., 2011. "Cash holdings and R&D smoothing," Journal of Corporate Finance, Elsevier, vol. 17(3), pages 694-709, June.
    66. Abel, Andrew B, 1983. "Optimal Investment under Uncertainty," American Economic Review, American Economic Association, vol. 73(1), pages 228-233, March.
    67. Cohen, Wesley M & Klepper, Steven, 1996. "Firm Size and the Nature of Innovation within Industries: The Case of Process and Product R&D," The Review of Economics and Statistics, MIT Press, vol. 78(2), pages 232-243, May.
    68. Berkman, Henk & Jacobsen, Ben & Lee, John B., 2011. "Time-varying rare disaster risk and stock returns," Journal of Financial Economics, Elsevier, vol. 101(2), pages 313-332, August.
    69. Kim, Chansog (Francis) & Pantzalis, Christos & Chul Park, Jung, 2012. "Political geography and stock returns: The value and risk implications of proximity to political power," Journal of Financial Economics, Elsevier, vol. 106(1), pages 196-228.
    70. Brandon Julio & Youngsuk Yook, 2012. "Political Uncertainty and Corporate Investment Cycles," Journal of Finance, American Finance Association, vol. 67(1), pages 45-84, February.
    71. Chemmanur, Thomas J. & Tian, Xuan, 2018. "Do Antitakeover Provisions Spur Corporate Innovation? A Regression Discontinuity Analysis," Journal of Financial and Quantitative Analysis, Cambridge University Press, vol. 53(3), pages 1163-1194, June.
    72. Huseyin Gulen & Mihai Ion, 2016. "Editor's Choice Policy Uncertainty and Corporate Investment," The Review of Financial Studies, Society for Financial Studies, vol. 29(3), pages 523-564.
    73. James R. Brown & Steven M. Fazzari & Bruce C. Petersen, 2009. "Financing Innovation and Growth: Cash Flow, External Equity, and the 1990s R&D Boom," Journal of Finance, American Finance Association, vol. 64(1), pages 151-185, February.
    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. Adra, Samer & Gao, Yang & Huang, Jin & Yuan, Jiayi, 2023. "Geopolitical risk and corporate payout policy," International Review of Financial Analysis, Elsevier, vol. 87(C).
    2. Muhammad Khalid Anser & Qasim Raza Syed & Hooi Hooi Lean & Andrew Adewale Alola & Munir Ahmad, 2021. "Do Economic Policy Uncertainty and Geopolitical Risk Lead to Environmental Degradation? Evidence from Emerging Economies," Sustainability, MDPI, vol. 13(11), pages 1-15, May.
    3. Riti, Joshua Sunday & Shu, Yang & Riti, Miriam-Kamah J., 2022. "Geopolitical risk and environmental degradation in BRICS: Aggregation bias and policy inference," Energy Policy, Elsevier, vol. 166(C).
    4. Nguyen, Trang Thi Thuy & Pham, Binh Thai & Sala, Hector, 2022. "Being an emerging economy: To what extent do geopolitical risks hamper technology and FDI inflows?," Economic Analysis and Policy, Elsevier, vol. 74(C), pages 728-746.
    5. Alam, Ahmed W. & Houston, Reza & Farjana, Ashupta, 2023. "Geopolitical risk and corporate investment: How do politically connected firms respond?," Finance Research Letters, Elsevier, vol. 53(C).
    6. Jia, Shaoqing & Yang, Liuyong & Zhou, Fangzhao, 2022. "Geopolitical risk and corporate innovation: Evidence from China," Journal of Multinational Financial Management, Elsevier, vol. 66(C).
    7. Tomiwa Sunday Adebayo & Seyi Saint Akadiri & Joshua Sunday Riti & Ada Tony Odu, 2023. "Interaction among geopolitical risk, trade openness, economic growth, carbon emissions and Its implication on climate change in india," Energy & Environment, , vol. 34(5), pages 1305-1326, August.
    8. Fiorillo, Paolo & Meles, Antonio & Pellegrino, Luigi Raffaele & Verdoliva, Vincenzo, 2023. "Geopolitical risk and stock liquidity," Finance Research Letters, Elsevier, vol. 54(C).

    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. Cui, Xin & Wang, Chunfeng & Liao, Jing & Fang, Zhenming & Cheng, Feiyang, 2021. "Economic policy uncertainty exposure and corporate innovation investment: Evidence from China," Pacific-Basin Finance Journal, Elsevier, vol. 67(C).
    2. Drobetz, Wolfgang & El Ghoul, Sadok & Guedhami, Omrane & Janzen, Malte, 2018. "Policy uncertainty, investment, and the cost of capital," Journal of Financial Stability, Elsevier, vol. 39(C), pages 28-45.
    3. Inoue, Hitoshi & Kani, Masayo & Nakashima, Kiyotaka, 2019. "The Dynamic Effect of Uncertainty on Corporate Investment through Internal and External Financing," MPRA Paper 98533, University Library of Munich, Germany.
    4. Nguyen, Minh Hong & Trinh, Vu Quang, 2023. "U.K. economic policy uncertainty and innovation activities: A firm-level analysis," Journal of Economics and Business, Elsevier, vol. 123(C).
    5. Hsu, Po-Hsuan & Taylor, Mark P. & Wang, Zigan & Xu, Qi, 2022. "Currency volatility and global technological innovation," Journal of International Economics, Elsevier, vol. 137(C).
    6. Xu, Zhaoxia, 2020. "Economic policy uncertainty, cost of capital, and corporate innovation," Journal of Banking & Finance, Elsevier, vol. 111(C).
    7. Ramana Nanda & William R. Kerr, 2015. "Financing Innovation," Annual Review of Financial Economics, Annual Reviews, vol. 7(1), pages 445-462, December.
    8. Ramana Nanda & William R. Kerr, 2015. "Financing Innovation," Annual Review of Financial Economics, Annual Reviews, vol. 7(1), pages 445-462, December.
    9. repec:zbw:bofrdp:2015_028 is not listed on IDEAS
    10. Aysun, Uluc & Kabukcuoglu, Zeynep, 2019. "Interest rates, R&D investment and the distortionary effects of R&D incentives," European Economic Review, Elsevier, vol. 111(C), pages 191-210.
    11. Cao, Yang & Chen, Yinghui & Zhang, Yuhe, 2022. "Political uncertainty, innovation-driven strategy, and corporate R&D," Research in International Business and Finance, Elsevier, vol. 60(C).
    12. Suyi Zheng & Jiandong Wen, 2023. "How Does Firm-Level Economic Policy Uncertainty Affect Corporate Innovation? Evidence from China," Sustainability, MDPI, vol. 15(7), pages 1-23, April.
    13. repec:zbw:bofrdp:urn:nbn:fi:bof-201512141480 is not listed on IDEAS
    14. Xiaoqiong Wang & Siqi Wei & Xiaoyang Zhu, 2024. "Economic policy uncertainty and heterogeneous institutional investor horizons," Review of Quantitative Finance and Accounting, Springer, vol. 62(1), pages 39-67, January.
    15. Lin William Cong & Sabrina T. Howell, 2021. "Policy Uncertainty and Innovation: Evidence from Initial Public Offering Interventions in China," Management Science, INFORMS, vol. 67(11), pages 7238-7261, November.
    16. William, Mbanyele & Fengrong, Wang, 2022. "Economic policy uncertainty and industry innovation: Cross country evidence," The Quarterly Review of Economics and Finance, Elsevier, vol. 84(C), pages 208-228.
    17. Arbatli Saxegaard, Elif C. & Davis, Steven J. & Ito, Arata & Miake, Naoko, 2022. "Policy uncertainty in Japan," Journal of the Japanese and International Economies, Elsevier, vol. 64(C).
    18. Pan, Wei-Fong & Wang, Xinjie & Yang, Shanxiang, 2019. "Debt maturity, leverage, and political uncertainty," The North American Journal of Economics and Finance, Elsevier, vol. 50(C).
    19. Peng, Daoju & Colak, Gonul & Shen, Jianfu, 2023. "Lean against the wind: The effect of policy uncertainty on a firm's corporate social responsibility strategy," Journal of Corporate Finance, Elsevier, vol. 79(C).
    20. repec:bof:bofrdp:urn:nbn:fi:bof-201512141480 is not listed on IDEAS
    21. Al-Thaqeb, Saud Asaad & Algharabali, Barrak Ghanim, 2019. "Economic policy uncertainty: A literature review," The Journal of Economic Asymmetries, Elsevier, vol. 20(C).
    22. Duong, Huu Nhan & Nguyen, Justin Hung & Nguyen, My & Rhee, S. Ghon, 2020. "Navigating through economic policy uncertainty: The role of corporate cash holdings," Journal of Corporate Finance, Elsevier, vol. 62(C).
    23. Daniel Dejuán & Corinna Ghirelli, 2018. "Policy uncertainty and investment in Spain," Working Papers 1848, Banco de España.

    More about this item

    Keywords

    R&D; Political uncertainty; Geopolitical risk; Innovation;
    All these keywords.

    JEL classification:

    • D80 - Microeconomics - - Information, Knowledge, and Uncertainty - - - General
    • H56 - Public Economics - - National Government Expenditures and Related Policies - - - National Security and War
    • O31 - Economic Development, Innovation, Technological Change, and Growth - - Innovation; Research and Development; Technological Change; Intellectual Property Rights - - - Innovation and Invention: Processes and Incentives

    NEP fields

    This paper has been announced in the following NEP Reports:

    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:rdg:emxxdp:em-dp2019-11. 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: Alexander Mihailov (email available below). General contact details of provider: https://edirc.repec.org/data/derdguk.html .

    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.