TY  - JOUR
AU  - V. P. Skripnik
TI  - Degenerate systems and a small parameter at the derivative
JO  - Differencialʹnye uravneniâ
PY  - 1968
SP  - 646
EP  - 658
VL  - 4
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1968_4_4_a7/
LA  - ru
ID  - DE_1968_4_4_a7
ER  -