共 48 条
[1]
[Anonymous], 1968, ORG IND
[2]
Bain JS, 1956, BARRIERS NEW COMPETI, DOI 10.4159/harvard.9780674188037
[4]
BROZEN Y, 1971, ANTITRUST B SUM, P241
[5]
BROZEN Y, 1974, IND CONCENTRATION NE, P115
[10]
ELTON EJ, 1981, MODERN PORTFOLIO THE