@article{马海成:100, author = {马海成,李生刚}, title = {有限拓扑的有向图表示}, publisher = {《山东大学学报(理学版)》}, year = {2017}, journal = {《山东大学学报(理学版)》}, volume = {52}, number = {4}, eid = {100}, numpages = {4}, pages = {100}, keywords = {有限拓扑;有向图;闭包公理}, url = {http://lxbwk.njournal.sdu.edu.cn/CN/abstract/article_2291.shtml}, doi = {10.6040/j.issn.1671-9352.0.2016.362} }