@inproceedings{alastair2015exchange,
title={Exchange graphs and Ext quivers},
author={Alastair King, and Yu Qiu},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20190625202158654956358},
booktitle={Advances in Mathematics},
volume={285},
pages={1106–1154},
year={2015},
}

Alastair King, and Yu Qiu. Exchange graphs and Ext quivers. 2015. Vol. 285. In Advances in Mathematics. pp.1106–1154. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20190625202158654956358.