共 29 条
[1]
AMIR R, 1998, 1 OD U SCH BUS EC
[2]
[Anonymous], INT J IND ORGAN
[3]
CASSIMAN B, 1998, UNPUB SPILLOVERS R D
[4]
Cockburn IM, 1998, J IND ECON, V46, P157
[7]
DASPREMONT C, 1988, AM ECON REV, V78, P1133
[8]
De Bondt R., 1991, Eur. J. Polit. Econ., V7, P345, DOI [10.1016/0176-2680(91)90018-X, DOI 10.1016/0176-2680(91)90018-X]
[9]
GEROSKI PA, 1994, EC APPROACHES INNOVA
[10]
Griliches Z., 1992, Scandinavian Journal of Economics, V94, P29, DOI [10.2307/3440244, DOI 10.2307/3440244]