TY  - JOUR
AU  - R. P. Malayshka
TI  - Symmetries of the Birkhoff equations, and conservation laws
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1275
EP  - 1277
VL  - 25
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_7_a27/
LA  - ru
ID  - DE_1989_25_7_a27
ER  -