@inproceedings{andreas1993equivalent,
title={Equivalent norms for the Sobolev space$W$_{0}^{$m,p$}(Ω)},
author={Andreas Wannebo},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203543190850623},
booktitle={Arkiv for Matematik},
volume={32},
number={1},
pages={245-254},
year={1993},
}
Andreas Wannebo. Equivalent norms for the Sobolev space$W$_{0}^{$m,p$}(Ω). 1993. Vol. 32. In Arkiv for Matematik. pp.245-254. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203543190850623.