@inproceedings{alberto2009$j$-embeddable,
title={$J$-embeddable reducible surfaces},
author={Alberto Alzati, and Edoardo Ballico},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170108203630206539001},
booktitle={Arkiv for Matematik},
volume={49},
number={2},
pages={199-215},
year={2009},
}