%0 Journal Article %A A. P. Kiselev %A M. V. Perel' %T Relatively Distortion-Free Waves for the $m$-Dimensional Wave Equation %J Differencialʹnye uravneniâ %D 2002 %P 1128-1129 %V 38 %N 8 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_2002_38_8_a17/ %G ru %F DE_2002_38_8_a17