Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{ELMA_1975__30_141161, author = {W. Wunderlich}, title = {Elementarer {Zugang} zur hyperbolischen {Geometrie.}}, journal = {Elemente der Mathematik}, pages = {103--108}, publisher = {mathdoc}, volume = {30}, year = {1975}, zbl = {0309.50009}, url = {http://geodesic.mathdoc.fr/item/ELMA_1975__30_141161/} }
W. Wunderlich. Elementarer Zugang zur hyperbolischen Geometrie.. Elemente der Mathematik, Tome 30 (1975), pp. 103-108. http://geodesic.mathdoc.fr/item/ELMA_1975__30_141161/