@article{MAN_1912__71_158532,
     author = {S. Heller},
     title = {Note zu meiner {Abhandlung} {?Untersuchungen} \"uber die nat\"urlichen {Gleichungen} krummer {Fl\"achen}},
     journal = {Mathematische Annalen},
     pages = {299--302},
     publisher = {mathdoc},
     volume = {71},
     year = {1912},
     zbl = {42.0631.01},
     url = {http://geodesic.mathdoc.fr/item/MAN_1912__71_158532/}
}