Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1969_189_5_a2, author = {P. P. Zabreiko and A. V. Zafievskii}, title = {A certain class of semigroups}, journal = {Doklady Akademii Nauk}, pages = {934--937}, publisher = {mathdoc}, volume = {189}, number = {5}, year = {1969}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1969_189_5_a2/} }
P. P. Zabreiko; A. V. Zafievskii. A certain class of semigroups. Doklady Akademii Nauk, Tome 189 (1969) no. 5, pp. 934-937. http://geodesic.mathdoc.fr/item/DAN_1969_189_5_a2/