@inproceedings{alexander2012homologies,
title={Homologies of path complexes and digraphs},
author={Alexander Grigor'yan, Yong Lin, Yuri Muranov, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204235770847149},
booktitle={arXiv preprint arXiv:1207.2834},
year={2012},
}
Alexander Grigor'yan, Yong Lin, Yuri Muranov, and Shing-Tung Yau. Homologies of path complexes and digraphs. 2012. In arXiv preprint arXiv:1207.2834. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204235770847149.