@inproceedings{juha2000very,
title={Very weak solutions of parabolic systems of$p$-Laplacian type},
author={Juha Kinnunen, and John L. Lewis},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203603942321786},
booktitle={Arkiv for Matematik},
volume={40},
number={1},
pages={105-132},
year={2000},
}
Juha Kinnunen, and John L. Lewis. Very weak solutions of parabolic systems of$p$-Laplacian type. 2000. Vol. 40. In Arkiv for Matematik. pp.105-132. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203603942321786.