@inproceedings{mark2017relationships,
title={Relationships between cycle spaces, gain graphs, graph coverings, fundamental groups, path homology, and graph curvature},
author={Mark Kempton, Florentin Munch, and Shing-Tung Yau},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204856413936235},
booktitle={arXiv preprint arXiv:1710.01264},
year={2017},
}

Mark Kempton, Florentin Munch, and Shing-Tung Yau. Relationships between cycle spaces, gain graphs, graph coverings, fundamental groups, path homology, and graph curvature. 2017. In arXiv preprint arXiv:1710.01264. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20191224204856413936235.