共 13 条
[7]
Bollaboas B., 1979, GRAPH THEORY INTRO C
[8]
DeMeyer F., 2002, INT J COMMUTATIVE RI, V1, P93
[9]
Huckaba JA., 1988, COMMUTATIVE RINGS ZE
[10]
Kaplansky I., 1974, COMMUTATIVE RINGS