@article{GDZPPN002082926, title = {A Geometric Property of Functions Harminic in a Disk.}, journal = {Elemente der Mathematik}, volume = {47}, year = {1992}, pages = {33-38}, zbl = {0758.31001}, url = {http://dml.mathdoc.fr/item/GDZPPN002082926} }
Vignati, Marco. A Geometric Property of Functions Harminic in a Disk.. Elemente der Mathematik, Tome 47 (1992) pp. 33-38. http://gdmltest.u-ga.fr/item/GDZPPN002082926/