?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Mar%D1%96%C3%B1o-P%C3%A9rez%2C+Ricardo&rft.aulast=Mar%D1%96%C3%B1o-P%C3%A9rez&rft.aufirst=Ricardo&rft.issue=45+(5)&rft.date=2011&rft.atitle=Morphometric+variations+of+discophrya+elongata+(Ciliophora%2C+Suctorea)+attached+to+two+different+species+of+aquatic+true+bugs+(hemiptera%2C+prosorrhyncha%2C+nepomorpha)&rft.title=Vestnik+zoologii&rft.pages=13-19&rft.genre=article