Appendix A: Alternative Specification
Appendix B: Data Sources and Definitions
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Kao, C., and M-H. Chiang, 2000, “On the Estimation and Inference of a Cointegrated Regression in Panel Data, in B. Baltagi (ed.), Advances in Econometrics: Nonstationary Panels, Panel Cointegration and Dynamic Panels, 15, pp. 179–222.
Keller, W., 1998, “Are International R&D Spillovers Trade-Related? Analyzing Spillovers Among Randomly Matched Trade Partners,” European Economic Review, 42, pp. 1469–1481.
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La Porta, R., F. Lopez-de-Silanes, A. Shleifer, and R. Vishny, 1999, “The Quality of Government,” The Journal of Law, Economics, & Organization, 15, pp. 222–279.
La Porta, R., F. Lopez-de-Silanes, and A. Shleifer, 2008 (forthcoming), “The Economic Consequences of Legal Origins,” Journal of Economic Literature.
Levin, A., C. Lin, and C. Chu, 2002, “Unit root tests in panel data: Asymptotic and finite-sample properties,” Journal of Econometrics, 108, pp. 1–24.
Lichtenberg, F., and B. van Pottelsberghe de la Potterie, 1998, “International R&D Spillovers: A Comment,” European Economic Review, 42, pp. 1483–1491.
Luintel, K., and M. Khan, 2004, “Are International R&D Spillovers Costly for the United States?” The Review of Economics and Statistics, 86 (November), pp. 896–910.