TY  - JOUR
AU  - Svetla Spirova
TI  - On a Boundary, Value Problem for an Equation of Mixed Type
JO  - Mathematica balkanica
PY  - 1994
SP  - 221
VL  - 8
IS  - 2-3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MABA_1994_8_2-3_a8/
ID  - MABA_1994_8_2-3_a8
ER  -