Albert M., 1991, Research Policy, 20, 251, 10.1016/0048-7333(91)90055-U
Coe D., 1995, European Economic Review, 39, 859, 10.1016/0014-2921(94)00100-E
Fama E., 1992, Journal of Finance, 47, 427, 10.1111/j.1540-6261.1992.tb04398.x
Griliches Z., 1995, Handbook of the Economics of Innovation and Technological Change
Griliches Z., 1987, Economic Policy and Technological Performance, 97, 10.1017/CBO9780511559938.006
Lev B., 1996, Journal of Accounting and Economics, 21, 107, 10.1016/0165-4101(95)00410-6
Narin F., 1997, Research Policy, 26, 317, 10.1016/S0048-7333(97)00013-9
Ohlson J., 1995, Contemporary Accounting Research, 11, 661, 10.1111/j.1911-3846.1995.tb00461.x
Teece D., 1997, Strategic Management Journal, 18, 509, 10.1002/(SICI)1097-0266(199708)18:7<509::AID-SMJ882>3.0.CO;2-Z
Trajtenberg M., 1989, Journal of Political Economy, 97, 445, 10.1086/261611
Trajtenberg M., 1990, Rand Journal of Economics, 21, 172, 10.2307/2555502