?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=57+(5)&rft.date=2010&rft.atitle=Periacineta+mexicana+n.+sp.+(Ciliophora%2C+Suctoria%2C+Discophryida)%2C+Epizoic+on+Mexican+Backswimmers+of+the+Genus+Buenoa+(Insecta%2C+Hemiptera%2C+Notonectidae)&rft.title=J.+Eukaryot.+Microbiol&rft.pages=435-443&rft.genre=article