TY  - JOUR
AU  - A. M. Vinogradov
AU  - I. S. Krasil'shchik
TI  - A method of computing higher symmetries of nonlinear evolution equations, and nonlocal symmetries
JO  - Doklady Akademii Nauk
PY  - 1980
SP  - 1289
EP  - 1293
VL  - 253
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1980_253_6_a0/
LA  - ru
ID  - DAN_1980_253_6_a0
ER  -