@article{MAN_1913__74_158633,
     author = {P. Funk},
     title = {\"Uber {Fl\"achen} mit lauter geschlossenen geod\"atischen {Linien.}},
     journal = {Mathematische Annalen},
     pages = {278--300},
     publisher = {mathdoc},
     volume = {74},
     year = {1913},
     zbl = {44.0692.03},
     url = {http://geodesic.mathdoc.fr/item/MAN_1913__74_158633/}
}