Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1979_247_4_a1, author = {A. V. Arkhangel'skii}, title = {Cardinal invariants of topological groups. {Imbeddings} and condensations}, journal = {Doklady Akademii Nauk}, pages = {779--782}, publisher = {mathdoc}, volume = {247}, number = {4}, year = {1979}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1979_247_4_a1/} }
A. V. Arkhangel'skii. Cardinal invariants of topological groups. Imbeddings and condensations. Doklady Akademii Nauk, Tome 247 (1979) no. 4, pp. 779-782. http://geodesic.mathdoc.fr/item/DAN_1979_247_4_a1/