%0 Journal Article %A N. B. Pleschinskii %A E. A. Osipov %T Summatory and integral equations in periodic problems of the diffraction of elastic waves by defects in layered media %J Izvestiâ vysših učebnyh zavedenij. Matematika %D 2008 %P 76-82 %N 9 %I mathdoc %U http://geodesic.mathdoc.fr/item/IVM_2008_9_a8/ %G ru %F IVM_2008_9_a8