?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aufirst=Gradimir+V.&rft.aulast=Milovanovi%C4%87&rft.au=+Milovanovi%C4%87+Gradimir+V.&rft.pages=413-417&rft.issn=0001-6969&rft.date=1984&rft.title=Acta+scientiarum+mathematicarum&rft.issue=3-4&rft.volume=47&rft.atitle=Some+discrete+inequalities+of+Opial's+type&rft.genre=article