共 6 条
[1]
BOURBAKI, 1948, ACT SC IND, P1044
[3]
SAMUEL, 1947, C R ACAD SCI PARIS, V225, P1244
[4]
SNAPPER, 1947, AM J MATH, V69, P299
[5]
VANDERWAERDEN, 1943, MODERNE ALGEBRA