Chang, M.-S.M.-S.ChangKo, M.-T.M.-T.KoHSUEH-I LU2020-05-042020-05-042015https://scholars.lib.ntu.edu.tw/handle/123456789/488595Linear-Time Algorithms for Tree Root Problemsjournal article10.1007/s00453-013-9815-yhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84926278266&doi=10.1007%2fs00453-013-9815-y&partnerID=40&md5=c71c3c4bac0067460066eb973a137ad4