%0 Journal Article %A I. A. Gurtueva %T X-rays reflectivity evaluation with regard to real state of surface and shadowing effects %J News of the Kabardin-Balkar scientific center of RAS %D 2015 %P 13-17 %N 5 %I mathdoc %U http://geodesic.mathdoc.fr/item/IZKAB_2015_5_a1/ %G ru %F IZKAB_2015_5_a1