@article{MAN_1955__129_160421,
     author = {H. Tietz},
     title = {Eine {Normalform} berandeter {Riemannscher} {Fl\"achen.}},
     journal = {Mathematische Annalen},
     pages = {44--49},
     publisher = {mathdoc},
     volume = {129},
     year = {1955},
     zbl = {0064.07702},
     url = {http://geodesic.mathdoc.fr/item/MAN_1955__129_160421/}
}