@inproceedings{heli2005characterization,
title={Characterization of Orlicz–Sobolev space},
author={Heli Tuominen},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203618543968902},
booktitle={Arkiv for Matematik},
volume={45},
number={1},
pages={123-139},
year={2005},
}