?url_ver=Z39.88-2004&rft_id=10.1016%2Fj.compstruct.2015.05.039&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.au=Bacigalupo%2C+Andrea&rft.aulast=Bacigalupo&rft.aufirst=Andrea&rft.pages=530+-+544&rft.volume=131&rft.date=May+2015&rft.atitle=Auxetic+anti-tetrachiral+materials%3A+equivalent+elastic+properties+and+frequency+band-gaps+&rft.title=Composite+Structures+&rft.issn=0263-8223+&rft.genre=article