TY  - JOUR
AU  - V. F. Butuzov
AU  - A. B. Vasil'eva
TI  - Differential and difference systems of equations with a small parameter in the case when the unperturbed (degenerate) system is situated on the spectrum
JO  - Differencialʹnye uravneniâ
PY  - 1970
SP  - 650
EP  - 664
VL  - 6
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1970_6_4_a7/
LA  - ru
ID  - DE_1970_6_4_a7
ER  -