Брайловский H. H., Моржов C. B., and В. А. Хорошко. “Information Protection in Controlling Air Traffic”. Proceedings of National Aviation University (archive) 6, no. 1-2 (September 20, 2000): 110–113. Accessed April 13, 2026. http://jrnl.kai.edu.ua/index.php/visnik/article/view/9727.