Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1981_29_2_a1, author = {V. A. Ratinov}, title = {Semiperfect rings with nilpotent quasiregular group}, journal = {Matemati\v{c}eskie zametki}, pages = {171--180}, publisher = {mathdoc}, volume = {29}, number = {2}, year = {1981}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1981_29_2_a1/} }
V. A. Ratinov. Semiperfect rings with nilpotent quasiregular group. Matematičeskie zametki, Tome 29 (1981) no. 2, pp. 171-180. http://geodesic.mathdoc.fr/item/MZM_1981_29_2_a1/