@inproceedings{michael1979monotonicity,
title={Monotonicity properties of interpolation spaces II},
author={Michael Cwikel},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203509964210347},
booktitle={Arkiv for Matematik},
volume={19},
number={1},
pages={123-136},
year={1979},
}