Voir la notice de l'article provenant de la source Math-Net.Ru
@article{DAN_1961_138_1_a19, author = {L. N. Shevrin}, title = {Structural properties of semigroups}, journal = {Doklady Akademii Nauk}, pages = {73--76}, publisher = {mathdoc}, volume = {138}, number = {1}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a19/} }
L. N. Shevrin. Structural properties of semigroups. Doklady Akademii Nauk, Tome 138 (1961) no. 1, pp. 73-76. http://geodesic.mathdoc.fr/item/DAN_1961_138_1_a19/