Keh, H.J.H.J.KehChen, J.B.J.B.ChenKim, S.S.KimHUAN-JANG KEH2020-01-062020-01-061993https://scholars.lib.ntu.edu.tw/handle/123456789/445285journal article10.1016/0927-7757(93)80426-F2-s2.0-0011040686https://www.scopus.com/inward/record.uri?eid=2-s2.0-0011040686&doi=10.1016%2f0927-7757%2893%2980426-F&partnerID=40&md5=866dfd004e7d920f928240ff3ad79c94