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@article{IVM_1978_5_a3, author = {A. N. Grin'}, title = {The membership of a~mapping in a~certain class}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {32--38}, publisher = {mathdoc}, number = {5}, year = {1978}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1978_5_a3/} }
A. N. Grin'. The membership of a~mapping in a~certain class. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 5 (1978), pp. 32-38. http://geodesic.mathdoc.fr/item/IVM_1978_5_a3/