Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1966_4_a22, author = {\`E. G. Shutov}, title = {Potential invertibility of elements of semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {153--163}, publisher = {mathdoc}, number = {4}, year = {1966}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1966_4_a22/} }
È. G. Shutov. Potential invertibility of elements of semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 4 (1966), pp. 153-163. http://geodesic.mathdoc.fr/item/IVM_1966_4_a22/