@article{MZ_1934__38_168509,
     author = {R. Sauer},
     title = {Kr\"ummnngsfeste {Kurven} bei, einer infinitesimalen {Fl\"achenverbiegung}},
     journal = {Mathematische Zeitschrift},
     pages = {468--475},
     publisher = {mathdoc},
     volume = {38},
     year = {1934},
     zbl = {0008.32301},
     url = {http://geodesic.mathdoc.fr/item/MZ_1934__38_168509/}
}