TY  - JOUR
AU  - K. I. Babenko
TI  - On~summability and convergence of eigenfunction expansions of a~diffe\-rential operator
JO  - Sbornik. Mathematics
PY  - 1973
SP  - 157
EP  - 211
VL  - 20
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/SM_1973_20_2_a0/
LA  - en
ID  - SM_1973_20_2_a0
ER  -