Kharchenko, Volodymyr, Oleh Alexeiev, and Tamara Kolesnyk. “ENSURING THE GUARANTEED LEVEL OF FLIGHTS SAFETY – THE VIEW OF THE FUTURE”. Proceedings of National Aviation University 77, no. 4 (March 5, 2019): 8–15. Accessed March 28, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/13492.