@inproceedings{xia2014optimal,
title={Optimal penalty parameter for C^0 IPDG},
author={Xia Ji, Jiguang Sun, and Yang Yang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170130224730438990144},
booktitle={Applied Mathematics Letters},
volume={37},
pages={112-117},
year={2014},
}