@article{GDZPPN002040417, title = {On Perrine's generalized Markoff equation.}, journal = {Aequationes mathematicae}, volume = {45}, year = {1993}, pages = {203-211}, zbl = {0813.11013}, url = {http://dml.mathdoc.fr/item/GDZPPN002040417} }
Cusick, T.W. On Perrine's generalized Markoff equation.. Aequationes mathematicae, Tome 45 (1993) pp. 203-211. http://gdmltest.u-ga.fr/item/GDZPPN002040417/