TY  - JOUR
AU  - V. I. Gorbachev
TI  - Problems on eigenvalues for ordinary differential equations of the second order with variable coefficients
JO  - Čebyševskij sbornik
PY  - 2021
SP  - 353
EP  - 367
VL  - 22
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CHEB_2021_22_3_a20/
LA  - ru
ID  - CHEB_2021_22_3_a20
ER  -