TY  - JOUR
AU  - M. V. Keldysh
TI  - On the completeness of the eigenfunctions of some classes of non-selfadjoint linear operators
JO  - Trudy Matematicheskogo Instituta imeni V.A. Steklova
PY  - 1971
SP  - 15
EP  - 44
VL  - 26
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/RM_1971_26_4_a1/
LA  - en
ID  - RM_1971_26_4_a1
ER  -