國立臺灣大學資訊工程學系Wu, Bang-YeBang-YeWuChao, Kun-MaoKun-MaoChao2006-09-272018-07-052006-09-272018-07-052004http://ntur.lib.ntu.edu.tw//handle/246246/20060927122851742171application/pdf126869 bytesapplication/pdfzh-TWA note on a 2-approximation algorithm for the mrct problemotherhttp://ntur.lib.ntu.edu.tw/bitstream/246246/20060927122851742171/1/mrct_ratio2.pdf