MING-CHANG KANG2018-09-102018-09-101992http://www.scopus.com/inward/record.url?eid=2-s2.0-38249012297&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/296525Finite group actions on rational function fieldsjournal article10.1016/0021-8693(92)90009-B