TY  - JOUR
AU  - A. F. Andreev
TI  - Justification of Frommer's method for systems of class $C^\infty$
JO  - Differencialʹnye uravneniâ
PY  - 1991
SP  - 562
EP  - 572
VL  - 27
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1991_27_4_a1/
LA  - ru
ID  - DE_1991_27_4_a1
ER  -