@article{DAN_1981_256_6_a6,
     author = {V. G. Krotov},
     title = {On differentiability of functions in $L^p$ and $H^p$ for $0<p<1$},
     journal = {Doklady Akademii Nauk},
     pages = {1311--1314},
     publisher = {mathdoc},
     volume = {256},
     number = {6},
     year = {1981},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1981_256_6_a6/}
}