TY  - JOUR
AU  - A. M. Vinogradov
TI  - Multivalued solutions and a principle of classification of nonlinear differential equations
JO  - Doklady Akademii Nauk
PY  - 1973
SP  - 11
EP  - 14
VL  - 210
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1973_210_1_a0/
LA  - ru
ID  - DAN_1973_210_1_a0
ER  -