TY - JOUR AU - V. D. Didenko AU - N. Ya. Tikhonenko TI - Approximate solution of the matrix Riemann problem JO - Differencialʹnye uravneniâ PY - 1981 SP - 2086 EP - 2089 VL - 17 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/DE_1981_17_11_a16/ LA - ru ID - DE_1981_17_11_a16 ER -