TY  - JOUR
AU  - V. P. Derevenskii
TI  - Solvability in quadratures of second-order matrix differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1991
SP  - 901
EP  - 904
VL  - 27
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1991_27_5_a21/
LA  - ru
ID  - DE_1991_27_5_a21
ER  -