@inproceedings{yang2012analysis,
title={Analysis of optimal superconvergence of discontinuous Galerkin method for linear hyperbolic equations},
author={Yang Yang, and Chi-Wang Shu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20161012105329502526188},
booktitle={SIAM Journal on Numerical Analysis},
volume={50},
pages={3110-3133},
year={2012},
}

Yang Yang, and Chi-Wang Shu. Analysis of optimal superconvergence of discontinuous Galerkin method for linear hyperbolic equations. 2012. Vol. 50. In SIAM Journal on Numerical Analysis. pp.3110-3133. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20161012105329502526188.