1. The Search for R&D Spillovers, 94 SCANDINAVIAN;See Zvi Griliches;J. ECON,1992
2. Measuring the Social Return to R&D, 113;Charles Jones & John Williams;Q. J. ECON,1998
3. Standard-Setting Consortia, Antitrust, and High-Technology Industries, 64 ANTITRUST L;See James;J,1995