Soufien Karous,
svp jé vraiment besoin de cet article :http://asadl.org/jasa/resource/1/jasman/v113/i5/p2659_s1?isAuthorized=no
Negative group velocity Lamb waves on plates and applications to the scattering of sound by shells
Overview of attention for article published in Journal of the Acoustical Society of America, May 2003