共 15 条
[1]
Erdos J., 1954, ACTA MATH ACAD SCI H, V5, P45
[2]
Goldie A. W., 1960, P LOND MATH SOC, V10, P201
[4]
Hall P., 1958, P LOND MATH SOC, V4, P419
[6]
JATEGAONKAR AV, 1970, LECTURE NOTES MATH, V123
[7]
LAMBEK J, TO BE PUBLISHED
[8]
LAMBEK J, 1966, LECTURES RINGS MODUL
[10]
MCCONNELL JC, 1968, J LONDON MATH SOC, V43, P421