TY  - JOUR
AU  - A. I. Perov
TI  - On a higher-dimensional linear differential equation of second order
JO  - Doklady Akademii Nauk
PY  - 1964
SP  - 755
EP  - 758
VL  - 159
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1964_159_4_a14/
LA  - ru
ID  - DAN_1964_159_4_a14
ER  -