@article{GDZPPN002341867, title = {Systoles of arithmetic surfaces and the Markoff spectrum.}, journal = {Mathematische Annalen}, volume = {305}, year = {1996}, pages = {191-204}, zbl = {0853.11054}, url = {http://dml.mathdoc.fr/item/GDZPPN002341867} }
Schmutz, Paul. Systoles of arithmetic surfaces and the Markoff spectrum.. Mathematische Annalen, Tome 305 (1996) pp. 191-204. http://gdmltest.u-ga.fr/item/GDZPPN002341867/