@article{MAN_1903__56_158063,
     author = {Andr\'e Markoff},
     title = {Sur les formes quadratiques ternaires ind\'efinies},
     journal = {Mathematische Annalen},
     pages = {233--251},
     publisher = {mathdoc},
     volume = {56},
     year = {1903},
     language = {fr},
     url = {http://geodesic.mathdoc.fr/item/MAN_1903__56_158063/}
}