@inproceedings{j.1899note, title={Note zur Theorie der Deformation der Flächen}, author={J. Weingarten}, url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203004240497049}, booktitle={Acta Mathematica}, volume={22}, number={1}, pages={193-199}, year={1899}, }