HSIEN-HAO LIAO2018-09-102018-09-102002http://www.airitilibrary.com/Publication/Index/03030849-200202-201501280005-201501280005-32-34http://scholars.lib.ntu.edu.tw/handle/123456789/298532journal article10.6637/CWLQ.2002.30(9).32-34