@inproceedings{lai2003graphs,
title={GRAPHS WITHOUT REPEATED CYCLE LENGTHS},
author={Lai Chunhui},
url={http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170212085848919414434},
booktitle={Australasian Journal of Combinatorics},
volume={27},
pages={101-105},
year={2003},
}

Lai Chunhui. GRAPHS WITHOUT REPEATED CYCLE LENGTHS. 2003. Vol. 27. In Australasian Journal of Combinatorics. pp.101-105. http://archive.ymsc.tsinghua.edu.cn/pacm_paperurl/20170212085848919414434.