TY  - JOUR
AU  - A. M. Vinogradov
AU  - I. S. Krasil'shchik
TI  - On the theory of nonlocal symmetries of nonlinear partial
JO  - Doklady Akademii Nauk
PY  - 1984
SP  - 1044
EP  - 1049
VL  - 275
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1984_275_5_a3/
LA  - ru
ID  - DAN_1984_275_5_a3
ER  -