@article{bwmeta1.element.bwnjournal-article-aav18i1p387bwm, author = {Hall, Marshall}, title = {The Markoff spectrum}, journal = {Acta Arithmetica}, volume = {18}, year = {1971}, pages = {387-399}, zbl = {0224.10023}, language = {en}, url = {http://dml.mathdoc.fr/item/bwmeta1.element.bwnjournal-article-aav18i1p387bwm} }
Hall, Marshall. The Markoff spectrum. Acta Arithmetica, Tome 18 (1971) pp. 387-399. http://gdmltest.u-ga.fr/item/bwmeta1.element.bwnjournal-article-aav18i1p387bwm/