Fitio, Volodymyr     Alternative methods for antireflection of optical surfaces with use of the transition layers and diffraction gratings [Текст] / Volodymyr Fitio, Yaroslav Bobitski // Laser and fiber-optical network modeling : proc. of 9-th Intern. conf., Alushta, Crimea, Ukraine, Oct. 2-4, 2008 / Kharkiv Nat. Univ. of Radio Electronics, V.N. Karazin Kharkiv Nat. Univ., Tavrida Nat. Univ., Univ. of Guanajuato. — Kharkiv, 2008. — P. 139-141.