Kharchenko V, Luppo O, Bo W, Argunov G, Vasyliev D, Raksha K. ANALYSIS OF THE FLIGHT OBJECT CONCEPT. Proceedings of National Aviation University [Internet]. 2015 Sep. 17 [cited 2024 Apr. 23];63(2):7-11. Available from: https://jrnl.nau.edu.ua/index.php/visnik/article/view/8826