?url_ver=Z39.88-2004&rft_id=MTMT%3A1672873&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.aulast=Karsai&rft.au=+Karsai+J%C3%A1nos&rft.aufirst=J%C3%A1nos&rft.pages=25-42&rft.issn=0971-3514&rft.volume=5&rft.date=1997&rft.title=DIFFERENTIAL+EQUATIONS+AND+DYNAMICAL+SYSTEMS&rft.atitle=Attractivity+criteria+for+intermittently+damped+second+order+nonlinear+differential+equations&rft.genre=article