基于含圈非连通图优美性的拓扑图密码
牟亚蓉, 刘信生, 姚兵
Topological graph passwords based on the gracefulness of disconnected graphs with circles
MU Yarong, LIU Xinsheng, YAO Bing
华东师范大学学报（自然科学版） . 2020, (1): 51 -57 .  DOI: 10.3969/j.issn.1000-5641.201811045