?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=V.&rft.aulast=Bovdi&rft.au=+Bovdi+V.&rft.pages=433-445&rft.issn=0001-6969&rft.date=2014&rft.title=Acta+scientiarum+mathematicarum&rft.issue=3-4&rft.volume=80&rft.atitle=On+the+unit+group+of+a+commutative+group+ring&rft.genre=article