Bogunenko, Mykola, Oleksandr Luppo, Gennadiy Argunov, Serhii Subbotin, and Alina German. “CONCEPT-MODEL OF SEMI-DUPLEX VHF TRAINING STATION”. Proceedings of National Aviation University 79, no. 2 (August 13, 2019): 34–40. Accessed December 21, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/13829.