TY  - JOUR
AU  - V. N. Laptinskii
AU  - V. V. Pugin
TI  - First order nonlinear matrix-valued differential equations
JO  - Differencialʹnye uravneniâ
PY  - 1969
SP  - 1523
EP  - 1525
VL  - 5
IS  - 8
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1969_5_8_a19/
LA  - ru
ID  - DE_1969_5_8_a19
ER  -