@article{GDZPPN00219841X,
title = {Univalency of harmonic mappings between surfaces.},
journal = {Journal f\"ur die reine und angewandte Mathematik},
volume = {329},
year = {1981},
pages = {141-153},
zbl = {0453.53036},
url = {http://dml.mathdoc.fr/item/GDZPPN00219841X}
}
Jost, Jürgen. Univalency of harmonic mappings between surfaces.. Journal für die reine und angewandte Mathematik, Tome 329 (1981) pp. 141-153. http://gdmltest.u-ga.fr/item/GDZPPN00219841X/