%0 Journal Article %A Yu. N. Karamzin %A A. P. Sukhorukov %A T. Schlegel %T Difference methods in nonstationary problems of radiation transmission in media with two-photon resonance %J Differencialʹnye uravneniâ %D 1982 %P 1213-1219 %V 18 %N 7 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1982_18_7_a16/ %G ru %F DE_1982_18_7_a16