TY  - JOUR
AU  - Marco Vignati
TI  - A Geometric Property of Functions Harminic in a Disk.
JO  - Elemente der Mathematik
PY  - 1992
SP  - 33
EP  - 38
VL  - 47
IS  - 3
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ELMA_1992__47_3_141526/
ID  - ELMA_1992__47_3_141526
ER  -