@inproceedings{runda2013the,
title={The geometrical analysis of the path of free kick},
author={Runda Ji, Hongyuan Fu, and Zuoru Yang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20160818145012559483238},
booktitle={Dongrun-Yau Science Award},
year={2013},
}