Polishchuk, Sergii, Yuriy Chynchenko, and Fedor Shishkov. “AVIATION ACCIDENTS AND INCIDENTS IN USA DURING 23rd SOLAR CYCLE”. Proceedings of National Aviation University 51, no. 2 (September 20, 2012): 30–34. Accessed December 22, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/2153.