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@article{IVM_1986_12_a3, author = {N. A. Davydov}, title = {On two equivalent definitions of a~kernel of a~sequence of complex numbers}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {19--21}, publisher = {mathdoc}, number = {12}, year = {1986}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1986_12_a3/} }
N. A. Davydov. On two equivalent definitions of a~kernel of a~sequence of complex numbers. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 12 (1986), pp. 19-21. http://geodesic.mathdoc.fr/item/IVM_1986_12_a3/