Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1962_145_5_a15, author = {L. N. Shevrin and V. M. Kopytov}, title = {Semigroups with relatively complemented subsemigroups}, journal = {Doklady Akademii Nauk}, pages = {1012--1015}, publisher = {mathdoc}, volume = {145}, number = {5}, year = {1962}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a15/} }
L. N. Shevrin; V. M. Kopytov. Semigroups with relatively complemented subsemigroups. Doklady Akademii Nauk, Tome 145 (1962) no. 5, pp. 1012-1015. http://geodesic.mathdoc.fr/item/DAN_1962_145_5_a15/