TY  - JOUR
AU  - A. B. Budak
TI  - Expansion in eigenfunctions of a fourth-order differential operator with a piecewise constant leading coefficient
JO  - Differencialʹnye uravneniâ
PY  - 1980
SP  - 1545
EP  - 1558
VL  - 16
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1980_16_9_a1/
LA  - ru
ID  - DE_1980_16_9_a1
ER  -