Chang, Ching-LuehChing-LuehChangYUH-DAUH LYUU2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-67349280885&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/352664journal article10.1016/j.tcs.2009.03.032