[1]左连翠.完全环和半完全环[J].济南大学学报(综合版),1997,{4}(02):50-52.

Zuo Liancui. PERFECT AND SEMIPERFECT RINGS. [J]. Journal of University of Jinan(Social Science Edition) (2):50-52(1997)

[1]左连翠.完全环和半完全环[J].济南大学学报(综合版),1997,{4}(02):50-52. DOI：

Zuo Liancui. PERFECT AND SEMIPERFECT RINGS. [J]. Journal of University of Jinan(Social Science Edition) (2):50-52(1997) DOI：