Voir la notice de l'article provenant de la source Math-Net.Ru
@article{AL_1973_12_3_a5, author = {R. \'E. Roomel'di}, title = {The lower nilradical of $(-1,1)$-rings}, journal = {Algebra i logika}, pages = {323--332}, publisher = {mathdoc}, volume = {12}, number = {3}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/AL_1973_12_3_a5/} }
R. É. Roomel'di. The lower nilradical of $(-1,1)$-rings. Algebra i logika, Tome 12 (1973) no. 3, pp. 323-332. http://geodesic.mathdoc.fr/item/AL_1973_12_3_a5/