%0 Journal Article %A L. K. Izraileva %T Applicability boundaries of the theory of absorption $K$-spectra of polycrystalline samples %J Doklady Akademii Nauk %D 1966 %P 1044-1047 %V 168 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/DAN_1966_168_5_a19/ %G ru %F DAN_1966_168_5_a19