Vasermanis, Edgars K., Nicholas A. Nechval, and Konstantin N. Nechval. “Optimal Allocation of Airplanes to Routes”. Aviation 8, no. 1 (March 31, 2004): 3-7. Accessed December 29, 2024. https://bme.vgtu.lt/index.php/Aviation/article/view/7426.