TY  - JOUR
AU  - V. E. Zakharov
AU  - A. V. Mikhailov
TI  - Variational principle for equations integrable by the inverse problem method
JO  - Funkcionalʹnyj analiz i ego priloženiâ
PY  - 1980
SP  - 55
EP  - 56
VL  - 14
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/FAA_1980_14_1_a10/
LA  - ru
ID  - FAA_1980_14_1_a10
ER  -