共 24 条
[1]
BISWAS N, 1969, BULL CALCUTTA MATH S, V61, P127
[2]
BISWAS N, 1970, ATTI ACCAD NAZ LIN, V48, P399
[5]
Dugundji J., 1966, TOPOLOGY
[8]
HUTTON B, 1974, 55 U AUCKL DEP MATH