TY - JOUR AU - V. A. Lykov AU - V. G. Nikolaev TI - A direct method for solving radiative transfer equations in the $P_1$ approximation JO - Žurnal vyčislitelʹnoj matematiki i matematičeskoj fiziki PY - 1998 SP - 1907 EP - 1918 VL - 38 IS - 11 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/ZVMMF_1998_38_11_a12/ LA - ru ID - ZVMMF_1998_38_11_a12 ER -