Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1983_34_6_a1, author = {Yu. V. Kuz'min}, title = {Group of extensions and the functor {Ext} in the variety~$\mathfrak R_C$}, journal = {Matemati\v{c}eskie zametki}, pages = {811--820}, publisher = {mathdoc}, volume = {34}, number = {6}, year = {1983}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1983_34_6_a1/} }
Yu. V. Kuz'min. Group of extensions and the functor Ext in the variety~$\mathfrak R_C$. Matematičeskie zametki, Tome 34 (1983) no. 6, pp. 811-820. http://geodesic.mathdoc.fr/item/MZM_1983_34_6_a1/