TY  - JOUR
AU  - Yu. N. Frolov
TI  - Sequences of linear aggregates that consist of eigenfunctions of a differential operator
JO  - Differencialʹnye uravneniâ
PY  - 1974
SP  - 676
EP  - 686
VL  - 10
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1974_10_4_a12/
LA  - ru
ID  - DE_1974_10_4_a12
ER  -