Луппо, О., В. Чередниченко, and А. Хоменок. “REQUIRED NAVIGATION PERFORMANCE AUTHORIZATION REQUIRED”. Proceedings of National Aviation University (archive) 49, no. 4 (April 4, 2012): 62–67. Accessed October 10, 2026. https://jrnl.kai.edu.ua/index.php/visnik/article/view/82.