TY - JOUR AU - V. I. Korzyuk AU - E. S. Cheb AU - M. S. Shirma TI - Solution of the first mixed problem for the wave equation by the method of characteristics JO - Trudy Instituta matematiki PY - 2009 SP - 23 EP - 34 VL - 17 IS - 2 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/TIMB_2009_17_2_a2/ LA - ru ID - TIMB_2009_17_2_a2 ER -