Voir la notice de l'article provenant de la source European Digital Mathematics Library
@article{CMH_1968__43_139376, author = {Francois Fricker}, title = {Ein {Gitterpunktproblem} im dreidiemnsionalen hyperbolischen {Raum.}}, journal = {Commentarii mathematici Helvetici}, pages = {402--416}, publisher = {mathdoc}, volume = {43}, year = {1968}, zbl = {0174.08303}, url = {http://geodesic.mathdoc.fr/item/CMH_1968__43_139376/} }
Francois Fricker. Ein Gitterpunktproblem im dreidiemnsionalen hyperbolischen Raum.. Commentarii mathematici Helvetici, Tome 43 (1968), pp. 402-416. http://geodesic.mathdoc.fr/item/CMH_1968__43_139376/