共 14 条
[1]
CAVES RE, 1991, BROOKINGS PAP ECO AC, P1
[2]
CONRAD CA, 1983, INT J IND ORGAN, V1, P353
[3]
FRANK RG, 1991, 3803 NAT BUR EC RES
[5]
GRABOWSKI H, 1986, AM ECON REV, V76, P195
[7]
GRABOWSKI HG, 1979, LAW CONTEMP PROBL, V43, P43
[9]
Masson A., 1985, GENERIC SUBSTITUTION
[10]
Scherer F. M., 1990, IND MARKET STRUCTURE