Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1979_25_4_a1, author = {V. A. Roman'kov}, title = {Universal theory of nilpotent groups}, journal = {Matemati\v{c}eskie zametki}, pages = {487--495}, publisher = {mathdoc}, volume = {25}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1979_25_4_a1/} }
V. A. Roman'kov. Universal theory of nilpotent groups. Matematičeskie zametki, Tome 25 (1979) no. 4, pp. 487-495. http://geodesic.mathdoc.fr/item/MZM_1979_25_4_a1/