@inproceedings{hwa-long1996some,
title={Some converses of the strong separation theorem},
author={Hwa-Long Gau, and Ngai-Ching Wong},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020211818716684249},
booktitle={Proceedings of the American Mathematical Society},
volume={124},
number={8},
pages={2443-2449},
year={1996},
}

Hwa-Long Gau, and Ngai-Ching Wong. Some converses of the strong separation theorem. 1996. Vol. 124. In Proceedings of the American Mathematical Society. pp.2443-2449. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191020211818716684249.