%0 Journal Article %A V. V. Sobolev %T Diffuse irradiation in a medium with mirror reflecting boundaries %J Doklady Akademii Nauk %D 1961 %P 571-574 %V 136 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1961_136_3_a14/ %G ru %F DAN_1961_136_3_a14