Avetyan, K.T., et al. “COMPARATIVE ANALYSIS OF TWO DIFFRACTION SCHEMES FOR WIDELY DIVERGENT BEAM OF X-RAY RADIATION”. Proceedings of the YSU A: Physical and Mathematical Sciences, vol. 51, no. 1 (242), Mar. 2017, pp. 81-84, doi:10.46991/PYSU:A/2017.51.1.081.