Li, YitingYitingLi2010-06-262018-06-282010-06-262018-06-281998http://ntur.lib.ntu.edu.tw//handle/246246/186276http://ntur.lib.ntu.edu.tw/bitstream/246246/186276/1/03.pdf304117 bytesapplication/pdfen-USjournal articlehttp://ntur.lib.ntu.edu.tw/bitstream/246246/186276/1/03.pdf