Тихонов, Є.О., and В.О. Івашкін. “Analysis of the Optical Parameters of Phase Holographic Gratings”. Proceedings of National Aviation University 36, no. 3 (March 1, 2008): 201–204. Accessed March 21, 2025. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1619.