共 8 条
[4]
Herfindahl O.C., 1950, THESIS COLUMBIA U
[5]
MILLER NC, 1961, J FINANCE, V16, P50
[6]
*US SEC EXCH COMM, 1963, REPORT SPECIAL STUDY, P94
[7]
WEST, 1971, ECONOMICS STOCK MARK, pCH9
[8]
WEST RR, 1971, ECONOMICS STOCK MARK, pCH4