Wu, B.Y.B.Y.WuChao, K.-M.K.-M.ChaoTang, C.Y.C.Y.TangKUN-MA0 CHAO2018-09-102018-09-102000http://www.scopus.com/inward/record.url?eid=2-s2.0-0011249280&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/289375Approximation algorithms for some optimum communication spanning tree problemsjournal article