國立臺灣大學資訊工程學系Wu, Bang-YeBang-YeWuChao, Kun-MaoKun-MaoChao2006-09-272018-07-052006-09-272018-07-05http://ntur.lib.ntu.edu.tw//handle/246246/20060927122858554646application/pdf104623 bytesapplication/pdfzh-TWA 2-approximation algorithm for the SROCT problemotherhttp://ntur.lib.ntu.edu.tw/bitstream/246246/20060927122858554646/1/sroct_ratio2.pdf