%0 Journal Article %A P. A. Bezirganyan %A A. Papoyan %A A. N. Kocharyan %A H. S. Semerjyan %T Focuser-cabinet of monochromatic X-ray radiation for the investigation of the preparation powder %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 1986 %P 81-85 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_1986_2_a13/ %G ru %F UZERU_1986_2_a13