TY  - JOUR
AU  - Veikko T. Purmonen
TI  - On parametrically quasi-elliptic boundary problems
JO  - Annales Fennici Mathematici
PY  - 1980
SP  - 237
EP  - 262
VL  - 5
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1980.0521/
DO  - 10.5186/aasfm.1980.0521
LA  - en
ID  - AFM_1980_5_2_a2
ER  -