Stankunas, J., and K. Vaitonyte. “Air Transport Growth and Its Impact on the Environment in EU Countries and Lithuania”. Proceedings of National Aviation University (archive) 17, no. 2 (June 24, 2003): 105–110. Accessed June 14, 2026. http://jrnl.kai.edu.ua/index.php/visnik/article/view/11927.