TY  - JOUR
AU  - A. I. Vagabov
TI  - Regularity Conditions for a Pencil of General Ordinary Differential Operators
JO  - Differencialʹnye uravneniâ
PY  - 2004
SP  - 299
EP  - 309
VL  - 40
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_2004_40_3_a1/
LA  - ru
ID  - DE_2004_40_3_a1
ER  -