References
- Barro , RJ and Sala-i-Martín , X . 1995 . Economic Growth , New York : McGrawHill .
- Coe , D and Helpman , E . 1995 . International R&D spillovers . European Economic Review , 39 : 859 – 87 .
- Edmond , C . 2001 . Some panel cointegration models of international R&D spillovers . Journal of Macroeconomics , 23 : 241 – 60 .
- Frantzen , D . 2003 . The causality between R&D and productivity in manufacturing: an international disaggregate panel data study . International Review of Applied Economics , 17 : 125 – 46 .
- Grossman , G and Helpman , E . 1991 . Innovation and Growth in the Global Economy , Cambridge, MA : MIT Press .
- Im , KS , Pesaran , MH and Shin , Y . 1997 . “ Testing for unit roots in heterogeneous panels ” . In mimeo , Cambridge : Department of Applied Economics, University of Cambridge .
- Kao , C . 1999 . Spurious regression and residual-based est for cointegration in panel data . Journal of Econometrics , 90 : 1 – 44 .
- Keller , W . 1999 . How Trade and Technology Flows Affect Productivity Growth , Cambridge : MAM . National Bureau of Economic Research Working Paper No. 6990
- Lichtenberg , F and van Pottelsbergue de la Potterie , B . 1998 . International R&D spillovers: a comment . European Economic Review , 42 : 1483 – 91 .
- López-Pueyo , C , Barcenilla , S and Sanaú , J . 2005 . Externalidades Tecnológicas y Productividad: un Análisis Sectorial , Zaragoza : FECEPAD, University of Zaragoza . Documento de Trabajo No. 20005-02, (available at http://www.dteconz.unizar.es/DT2005-02.pdf).
- Pedroni , P . 1995 . Panel cointegration analysis; asymptotic and finite sample properties of pooled time Series test with an application to the PPP hypothesis , 95 – 103 . Indiana University . Working Paper Series in Economics