TY - JOUR AU - G. R. Grigоryan TI - Diffraction image of primary narrow $X$-ray beam in weakly deformed crystal JO - Proceedings of the Yerevan State University. Physical and mathematical sciences PY - 2012 SP - 51 EP - 55 IS - 3 PB - mathdoc UR - http://geodesic.mathdoc.fr/item/UZERU_2012_3_a8/ LA - en ID - UZERU_2012_3_a8 ER -