%0 Journal Article %A A. M. Rostomyan %T Investigation of X-ray symmetric BBB-interferometers %J Proceedings of the Yerevan State University. Physical and mathematical sciences %D 2005 %P 48-52 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/UZERU_2005_1_a5/ %G ru %F UZERU_2005_1_a5