@article{SM_1969_7_2_a5,
     author = {V. A. Andrienko},
     title = {Necessary conditions for imbedding the function classes~$H^\omega_p$},
     journal = {Sbornik. Mathematics},
     pages = {273--292},
     year = {1969},
     volume = {7},
     number = {2},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/SM_1969_7_2_a5/}
}