@article{MM2_1992__77_2-3_155783,
     author = {B. Burgeth},
     title = {A {Schwarz} {Lemma} for harmonic and hyperbolic-harmonic functions in higher dimensions.},
     journal = {Manuscripta mathematica},
     pages = {283--292},
     year = {1992},
     volume = {77},
     number = {2-3},
     zbl = {0777.31003},
     url = {http://geodesic.mathdoc.fr/item/MM2_1992__77_2-3_155783/}
}