TY  - JOUR
AU  - A. Ya. Khokhryakov
TI  - An estimate of the eigenvalue that is smallest in absolute value for a certain periodic problem
JO  - Differencialʹnye uravneniâ
PY  - 1976
SP  - 1028
EP  - 1039
VL  - 12
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1976_12_6_a9/
LA  - ru
ID  - DE_1976_12_6_a9
ER  -