@article{1206133155, author = {Kreith, Kurt}, title = {A class of hyperbolic focal point problems}, journal = {Hiroshima Math. J.}, volume = {14}, number = {2}, year = {1984}, pages = { 203-210}, language = {en}, url = {http://dml.mathdoc.fr/item/1206133155} }
Kreith, Kurt. A class of hyperbolic focal point problems. Hiroshima Math. J., Tome 14 (1984) no. 2, pp. 203-210. http://gdmltest.u-ga.fr/item/1206133155/