Wei Yu 0011 Zhaohui Liu 0001 Xiaoguang Bao New approximation algorithms for the minimum cycle cover problem. 44-58 2019 793 Theor. Comput. Sci. https://doi.org/10.1016/j.tcs.2019.04.009 https://www.wikidata.org/entity/Q127826236 db/journals/tcs/tcs793.html#YuLB19