TY  - JOUR
AU  - L. D. Kudryavtsev
TI  - On some questions of spectral theory for differential equations, whose coefficients have irregular points
JO  - Informatics and Automation
PY  - 1989
SP  - 130
EP  - 142
VL  - 187
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1989_187_a8/
LA  - ru
ID  - TRSPY_1989_187_a8
ER  -