@inproceedings{jessica2008cusp,
title={CUSP SHAPES UNDER CONE DEFORMATION},
author={Jessica S. Purcell},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160909140457276787744},
booktitle={Journal of Differential Geometry},
volume={80},
number={3},
pages={453-500},
year={2008},
}

Jessica S. Purcell. CUSP SHAPES UNDER CONE DEFORMATION. 2008. Vol. 80. In Journal of Differential Geometry. pp.453-500. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160909140457276787744.