@article{IM2_1968_2_3_a6,
     author = {P. L. Ul'yanov},
     title = {The imbedding of certain function classes $H_p^\omega$},
     journal = {Izvestiya. Mathematics },
     pages = {601--637},
     publisher = {mathdoc},
     volume = {2},
     number = {3},
     year = {1968},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/IM2_1968_2_3_a6/}
}