@inproceedings{waixiang2017superconvergence,
title={Superconvergence of discontinuous Galerkin methods for 1-D linear hyperbolic equations with degenerate variable coefficients},
author={Waixiang Cao, Chi-Wang Shu, and Zhimin Zhang},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20180416101842719691048},
booktitle={ESAIM: Mathematical Modelling and Numerical Analysis},
volume={51},
pages={2213-2235},
year={2017},
}

Waixiang Cao, Chi-Wang Shu, and Zhimin Zhang. Superconvergence of discontinuous Galerkin methods for 1-D linear hyperbolic equations with degenerate variable coefficients. 2017. Vol. 51. In ESAIM: Mathematical Modelling and Numerical Analysis. pp.2213-2235. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20180416101842719691048.