TY  - JOUR
AU  - I. S. Kats
TI  - Compatibility of the coefficients of a~generalized second order linear differential equation
JO  - Sbornik. Mathematics
PY  - 1969
SP  - 345
EP  - 356
VL  - 8
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1969_8_3_a2/
LA  - en
ID  - SM_1969_8_3_a2
ER  -