@inproceedings{liping2015stratifications,
title={Stratifications of finite directed categories and generalized APR tilting modules},
author={Liping Li},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170222103651643078491},
booktitle={Comm. Algebra},
volume={43},
pages={1723-1741},
year={2015},
}
Liping Li. Stratifications of finite directed categories and generalized APR tilting modules. 2015. Vol. 43. In Comm. Algebra. pp.1723-1741. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170222103651643078491.