Бабак, В.П., Д.Г. Бабейчук, and О.І. Запорожець. “Model Study Evaluating Environmental Benefits Uprova-Tion cns/Atm Air Traffic Control Technology”. Proceedings of National Aviation University (archive) 31, no. 1 (July 27, 2012): 3–9. Accessed February 25, 2026. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1401.