Voir la notice de l'article provenant de la source Math-Net.Ru
@article{IVM_1971_1_a3, author = {V. S. Garvatskii}, title = {Stationary semigroups}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {26--34}, publisher = {mathdoc}, number = {1}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1971_1_a3/} }
V. S. Garvatskii. Stationary semigroups. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 1 (1971), pp. 26-34. http://geodesic.mathdoc.fr/item/IVM_1971_1_a3/