TY  - JOUR
AU  - Arne Beurling
TI  - A minimum principle for positive harmonic functions
JO  - Annales Fennici Mathematici
PY  - 1966
VL  - 371-390
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.5186/aasfm.1966.372/
DO  - 10.5186/aasfm.1966.372
LA  - en
ID  - AFM_1966_371-390_a18
ER  -