共 50 条
- [1] ON ISOMORPHIC CROSSED-PRODUCTS OF GROUPS AND RINGS DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1988, 41 (09): : 5 - 8
- [2] ON THE PLOTTING OF CROSSED-PRODUCTS OF GROUPS AND RINGS DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1987, 40 (09): : 9 - 12
- [5] ON REGULAR CROSSED-PRODUCTS OF GROUPS AND RINGS DOKLADI NA BOLGARSKATA AKADEMIYA NA NAUKITE, 1990, 43 (08): : 17 - 18