Voir la notice de l'article provenant de la source Math-Net.Ru
@article{MZM_1969_6_4_a4, author = {L. B. Shneperman}, title = {On the immersion of topological semigroups in topological groups}, journal = {Matemati\v{c}eskie zametki}, pages = {401--409}, publisher = {mathdoc}, volume = {6}, number = {4}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/MZM_1969_6_4_a4/} }
L. B. Shneperman. On the immersion of topological semigroups in topological groups. Matematičeskie zametki, Tome 6 (1969) no. 4, pp. 401-409. http://geodesic.mathdoc.fr/item/MZM_1969_6_4_a4/