参考文献/References:
[1] 赵志新, 刘仲奎.广义优越扩张[J] .江苏石油化工学院学
报, 1996 , 8 (3):42 -46.
[2] Shamsuddin A.Fini te Normaliging Ex tensions [J] .J of Alg ,
1992 , 151 :218 -220.
[3] 刘仲奎.环的Excellent 扩张[J] .数学学报, 1991 , 34 (6):
818 -824.
[4] Xue Weimin .On a Generaligation of Excullent Extensions [J] .
Act a Math Alg Vietnam , 1994 , 19 :31 -38 .
[5] Rege M B .On Von Neumann Regular Rings and SF -rings [J] .
Math Jap , 1986, 31 (6):927 -936 .
[6] Soueif L.Normaliging Ext ensions and Injecti ve Modules , Essentially
Bounded Normaliging Ex tensions [J] .Comm 1987 , 15 :
565 -610 .
[7] Passman D S .The Algebraic St ructure of Group Rings [M] .
New York :Wileg -Interscience, 1977.
[8] Ramamurthi V S .On the Injectivit y and Flatness of Certain Cyclic
Modules [J] .Proc Amer Math Soc, 1975 , 48 :21 -25 .
[9] Zhao Zhixin , Liu Zhongkui.PC -rings and Almost Excellent Extensions
[J] .Chinese Quart erly Journal of Mathematics , 2001 ,
16 (3):42 -47 .