Bartkiv, Lyubomyr     Simulations of concave holographic grating using optical-path-difference function [Текст] / Lyubomyr Bartkiv, Yaroslav Bobitski // Electronics and applied physics : proc. of the VIII Intern. conf., Oct. 23-26, 2012, Kyiv, Ukraine / Taras Shevchenko Nat. Univ. of Kyiv, Radiophysics Fac. — Kyiv, 2012. — P. 181-182.