共 9 条
[2]
Lancaster K., 1979, VARIETY EQUITY EFFIC
[6]
Spence M, 1974, MARKET SIGNALING INF
[7]
SPENCE M, 1977, J PUB EC
[8]
STIGLITZ J, 1977, REV EC STUDIES, V64, P407
[9]
Williamson O., 1975, MARKET HIERARCHIES