Cheng C.-K.JIANN-JONG LIAU2020-06-262020-06-2620030268-0033https://www.scopus.com/inward/record.uri?eid=2-s2.0-17544391089&doi=10.1016%2fS0268-0033%2803%2900093-7&partnerID=40&md5=90268b86003866691b3fd25c79e591c0https://scholars.lib.ntu.edu.tw/handle/123456789/505389conference paper10.1016/S0268-0033(03)00093-72-s2.0-17544391089