@inproceedings{jorge2002banach,
title={Banach spaces not containing$l$_{1}},
author={Jorge Mujica},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203608066575818},
booktitle={Arkiv for Matematik},
volume={41},
number={2},
pages={363-374},
year={2002},
}