@article{IVM_1972_8_a10,
     author = {Ya. G. Pritula},
     title = {Jackson's inequality for $B^2$-almost periodic functions},
     journal = {Izvesti\^a vys\v{s}ih u\v{c}ebnyh zavedenij. Matematika},
     pages = {90--93},
     publisher = {mathdoc},
     number = {8},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/IVM_1972_8_a10/}
}