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@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/} }
H. Tietz. Eine Normalform berandeter Riemannscher Flächen.. Mathematische Annalen, Tome 129 (1955), pp. 44-49. http://geodesic.mathdoc.fr/item/MAN_1955__129_160421/