Christauskas, Julius, and Jurgis Stanaitis. “Dynamics of Passenger Traffic Flow at Vilnius, Riga, Tallinn and Krakow Airports”. Aviation 12, no. 1 (March 31, 2008): 28-32. Accessed August 19, 2022. https://journals.vilniustech.lt/index.php/Aviation/article/view/6728.