Liu, S.-I.S.-I.LiuHEN-WAI TSAOSHEN-IUAN LIU2020-06-112020-06-111991https://scholars.lib.ntu.edu.tw/handle/123456789/499817journal article10.1080/002072191089213132-s2.0-0026131342https://www.scopus.com/inward/record.uri?eid=2-s2.0-0026131342&doi=10.1080%2f00207219108921313&partnerID=40&md5=7fa7f8f09b7db9584cfc216bf94f1f40