@article{MAN_1892__40_157596,
     author = {Andr\'e Markoff},
     title = {Sur la s\'erie hyperg\'eom\'etrique. {(Extrait} de deux lettres adress\'ees \`a {Mr.} {F.} {Klein)}},
     journal = {Mathematische Annalen},
     pages = {313--316},
     publisher = {mathdoc},
     volume = {40},
     year = {1892},
     url = {http://geodesic.mathdoc.fr/item/MAN_1892__40_157596/}
}