共 15 条
[2]
BUDINGER TF, 1971, 529 LAWR BERK LAB RE
[3]
CHAPMAN PK, 1972, P NATIONAL S NATURAL, P1002
[8]
FREMLIN JH, 1970, NEW SCI, V47, P42
[9]
MADEY R, 1972, P NATIONAL S NATURAL, P757