TY - JOUR AU - Yu. N. Drozhzhinov AU - N. I. Koslov TI - Asymptotic behaviour of the solution of the wave equation with a piecewise-discontinuous coefficient JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1975 SP - 782 EP - 785 VL - 15 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1975_15_3_a24/ LA - ru ID - ZVMMF_1975_15_3_a24 ER -