TY  - JOUR
AU  - G. E. Popov
TI  - A class of integrable systems with a small parameter
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 1214
EP  - 1217
VL  - 13
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_7_a6/
LA  - ru
ID  - DE_1977_13_7_a6
ER  -