%0 Journal Article %A V. D. Luk'yanov %T The application of the matrix Riemann problem to the investigation of normal waves excitation in an acoustic %J Zapiski Nauchnykh Seminarov POMI %D 1997 %P 129-132 %V 239 %I mathdoc %U http://geodesic.mathdoc.fr/item/ZNSL_1997_239_a11/ %G ru %F ZNSL_1997_239_a11