Chang, G. J.G. J.ChangJuan S. T.Liu, D. D.-F.D. D.-F.Liu2010-05-062018-06-282010-05-062018-06-282001http://ntur.lib.ntu.edu.tw//handle/246246/181395application/pdf169105 bytesapplication/pdfen-USMinimum span of no-hole (r+1)-distant coloringsjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/181395/1/42.pdf