Scattering of waves by thin periodic layers at high frequencies using the on-surface radiation condition method Author: H. Ammari Abstract: This paper deals with the scattering problem of acoustic and electromagnetic waves by thin periodic layers at high frequencies. The on-surface radiation condition method is employed to simplify the numerical computations of reflected and transmitted waves. The whole paper is available as a compressed Postscript file by internet procedure FTP anonymous on host barbes.polytechnique.fr ( 129.104.4.100) in the directory pub/RI/1997 under the name ammari_361.avr.ps.gz or by Netscape or any other www client via the CMAP www server "http://www.cmap.polytechnique.fr/"