共 7 条
[2]
Baer Reinhold, 1937, DUKE MATH J, V3, P68, DOI 10.1215/S0012-7094-37-00308-9
[3]
Cartan H., 1956, HOMOLOGICAL ALGEBRA
[4]
Kaplansky I., 1954, INFINITE ABELIAN GRO
[5]
LEVI FW, 1917, ABELSCHE GRUPPEN MIT
[6]
MACLANE SS, 1956, QUELQUES THEOREMES P
[7]
NUNKE RJ, MODULES EXTENSIONS D