TY  - JOUR
AU  - Tunca, Gülen Başcanbaz
AU  - Bairamov, Elgiz
TI  - Discrete spectrum and principal functions of non-selfadjoint differential operator
JO  - Czechoslovak Mathematical Journal
PY  - 1999
SP  - 689
EP  - 700
VL  - 49
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMJ_1999__49_4_a2/
LA  - en
ID  - CMJ_1999__49_4_a2
ER  -