Запорожець, О.І., О.О. Картишев, and О.А. Чайковська. “Graph-Analytic Method of Approximate Calculation of the Levels and Contours of Noise from Aircraft”. Proceedings of National Aviation University 33, no. 3-4 (March 1, 2007): 110–116. Accessed May 2, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/1508.