8Bitzer JUrgen, Kerekes M., (2008) "Does Foreign Direct Investment Transfer Technology across Borders?New Evidence," Economics Letters 100 (3) , 355-358.
9Brannerhjelm P., Oxelheim L., and Thulin P., (2005) "The Relationship between Domestic and Outward Foreign Direct Investment: The Role of Industry-specific Effects," International Business Review 14 (6) , 667-694.
10Coe D.T., Helpman E., (1995) "International R&D Spillovers," European Economic Review 39 (5) , 859-887.