Murzakulov, G., M. Nurguzhin, B. Albazarov, and B. Zhumazhanov. 2013. “Modern Methods of Design and Analysis of Optical Systems on Example of the off-Axis Catadioptric System”. Recent Contributions to Physics 2013 (1):95-100. https://bph.kaznu.kz/index.php/zhuzhu/article/view/739.