Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{MAN_1979__240_163224, author = {Hans Christoph Im Hof}, title = {The {Family} of {Horospheres} {Through} {Two} {Points.}}, journal = {Mathematische Annalen}, pages = {1--12}, publisher = {mathdoc}, volume = {240}, year = {1979}, zbl = {0379.53020}, url = {http://geodesic.mathdoc.fr/item/MAN_1979__240_163224/} }
Hans Christoph Im Hof. The Family of Horospheres Through Two Points.. Mathematische Annalen, Tome 240 (1979), pp. 1-12. http://geodesic.mathdoc.fr/item/MAN_1979__240_163224/