@article{GDZPPN002233738,
title = {A Schwarz Lemma for harmonic and hyperbolic-harmonic functions in higher dimensions.},
journal = {Manuscripta mathematica},
volume = {76},
year = {1992},
pages = {283-292},
zbl = {0777.31003},
url = {http://dml.mathdoc.fr/item/GDZPPN002233738}
}
Burgeth, B. A Schwarz Lemma for harmonic and hyperbolic-harmonic functions in higher dimensions.. Manuscripta mathematica, Tome 76 (1992) pp. 283-292. http://gdmltest.u-ga.fr/item/GDZPPN002233738/