@article{DAN_1991_319_1_a7,
     author = {V. G. Krotov},
     title = {A sharp estimate for the boundary behavior of functions in the {Hardy--Sobolev} classes $H^p_\alpha(B^n)$ in the critical case $\alpha p=n$},
     journal = {Doklady Akademii Nauk},
     pages = {42--45},
     publisher = {mathdoc},
     volume = {319},
     number = {1},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1991_319_1_a7/}
}