Ванецян, С. Г., and Ванецян A. C. “New Criteria of Serviceability of Aerodrome Lighting Equipment”. Proceedings of National Aviation University 6, no. 1-2 (September 20, 2000): 226–228. Accessed May 2, 2024. https://jrnl.nau.edu.ua/index.php/visnik/article/view/9758.