?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=+Ainea+Pietro&rft.aufirst=Pietro&rft.aulast=Ainea&rft.title=Acta+scientiarum+mathematicarum&rft.volume=74&rft.issn=0001-6969&rft.issue=3-4&rft.pages=669-687&rft.atitle=On+left+and+right+poles+of+the+resolvent&rft.date=2008&rft.genre=article