TY  - JOUR
AU  - A. L. Krylov
TI  - On a necessary and sufficient condition which can be used as a test that a given function belongs to the class $W_p^{(1)}$ of Sobolev
JO  - Doklady Akademii Nauk
PY  - 1958
SP  - 795
EP  - 796
VL  - 121
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1958_121_5_a6/
LA  - ru
ID  - DAN_1958_121_5_a6
ER  -