TY  - JOUR
AU  - S. Pyatkov
TI  - Some properties of eigenfunctions of linear pencils and applications to mixed type operator-differential equations
JO  - Banach Center Publications
PY  - 1992
SP  - 373
EP  - 382
VL  - 27
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/-27-2-373-382/
DO  - 10.4064/-27-2-373-382
LA  - en
ID  - 10_4064__27_2_373_382
ER  -