@article{1029004522, author = {Bear, H. S.}, title = {Distance-decreasing functions on the hyperbolic plane.}, journal = {Michigan Math. J.}, volume = {39}, number = {1}, year = {1992}, pages = { 271-279}, language = {en}, url = {http://dml.mathdoc.fr/item/1029004522} }
Bear, H. S. Distance-decreasing functions on the hyperbolic plane.. Michigan Math. J., Tome 39 (1992) no. 1, pp. 271-279. http://gdmltest.u-ga.fr/item/1029004522/