Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1965_6_a21, author = {L. N. Shevrin}, title = {Strong bands of semi-groups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {156--165}, publisher = {mathdoc}, number = {6}, year = {1965}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1965_6_a21/} }
L. N. Shevrin. Strong bands of semi-groups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1965), pp. 156-165. http://geodesic.mathdoc.fr/item/IVM_1965_6_a21/