@article{DAN_1960_135_6_a10,
     author = {P. Pilika},
     title = {Complement to {Nikolsky's} imbedding theorem for the $H^{*_{(r_1,\dots, r_n)}}_{p_1,\dots, p_n}$ class and the 
},
     journal = {Doklady Akademii Nauk},
     pages = {1334--1337},
     publisher = {mathdoc},
     volume = {135},
     number = {6},
     year = {1960},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1960_135_6_a10/}
}