TY  - JOUR
AU  - V. G. Zadorozhniy
TI  - Second-order differential equations in variational derivatives
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1679
EP  - 1683
VL  - 25
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_10_a3/
LA  - ru
ID  - DE_1989_25_10_a3
ER  -