Noether's problem for the groups with a cyclic subgroup of index 4

MING-CHANG KANG2018-09-102018-09-102012http://www.scopus.com/inward/record.url?eid=2-s2.0-84870363901&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/369600Noether's problem for the groups with a cyclic subgroup of index 4journal article10.1007/s00031-012-9195-4