The Schwarz Lemma for nonpositively curved riemannian surfaces.
Manuscripta mathematica, Tome 72 (1991) no. 1, pp. 251-256
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ZblMarc Troynaov. The Schwarz Lemma for nonpositively curved riemannian surfaces.. Manuscripta mathematica, Tome 72 (1991) no. 1, pp. 251-256. http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155641/
@article{MM2_1991__72_1_155641,
author = {Marc Troynaov},
title = {The {Schwarz} {Lemma} for nonpositively curved riemannian surfaces.},
journal = {Manuscripta mathematica},
pages = {251--256},
year = {1991},
volume = {72},
number = {1},
zbl = {0736.53043},
url = {http://geodesic.mathdoc.fr/item/MM2_1991__72_1_155641/}
}