@inproceedings{feng2014rigidity,
title={Rigidity of polyhedral surfaces I},
author={Feng Luo},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170531091115350195782},
booktitle={J. Differential Geometry},
volume={96},
number={2},
pages={241-302},
year={2014},
}