@article{GDZPPN002317346,
title = {Harnack Sets and Openness of Harmonie Morphisms.},
journal = {Mathematische Annalen},
volume = {243},
year = {1979},
pages = {181-186},
zbl = {0401.31004},
url = {http://dml.mathdoc.fr/item/GDZPPN002317346}
}
Fuglede, Bent. Harnack Sets and Openness of Harmonie Morphisms.. Mathematische Annalen, Tome 243 (1979) pp. 181-186. http://gdmltest.u-ga.fr/item/GDZPPN002317346/