@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/}
}