@article{DAN_1957_117_1_a2,
     author = {E. A. Bredikhina},
     title = {On the closest approximation of almost periodical functions by integral functions of finite degree},
     journal = {Doklady Akademii Nauk},
     pages = {17--20},
     publisher = {mathdoc},
     volume = {117},
     number = {1},
     year = {1957},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1957_117_1_a2/}
}