@inproceedings{john2006rationally,
title={Rationally convex sets on the unit sphere in ℂ^{2}},
author={John Wermer},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203621427114928},
booktitle={Arkiv for Matematik},
volume={46},
number={1},
pages={183-196},
year={2006},
}