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@article{IVM_1972_6_a8, author = {V. Yu. Popov}, title = {Best mean square approximations by entire functions of exponential type}, journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika}, pages = {65--73}, publisher = {mathdoc}, number = {6}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/IVM_1972_6_a8/} }
V. Yu. Popov. Best mean square approximations by entire functions of exponential type. Izvestiâ vysših učebnyh zavedenij. Matematika, no. 6 (1972), pp. 65-73. http://geodesic.mathdoc.fr/item/IVM_1972_6_a8/