%0 Journal Article %A I. Marek %A Ya. Kincl %T Relaxation length and nonnegative solutions in neutron transport theory %J Doklady Akademii Nauk %D 1976 %P 297-299 %V 228 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1976_228_2_a9/ %G ru %F DAN_1976_228_2_a9