TY - JOUR AU - A. P. Kiselev AU - M. V. Perel' TI - Relatively Distortion-Free Waves for the $m$-Dimensional Wave Equation JO - Differencialʹnye uravneniâ PY - 2002 SP - 1128 EP - 1129 VL - 38 IS - 8 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_2002_38_8_a17/ LA - ru ID - DE_2002_38_8_a17 ER -