Chan, Chang-ChuanChang-ChuanChan2009-06-172018-06-292009-06-172018-06-292004http://ntur.lib.ntu.edu.tw//handle/246246/161350application/pdf38223 bytesapplication/pdfen-USResponse to letter by Yujournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/161350/1/35.pdf