Sonmez, Rifat, and Bahadir Ontepeli. “Predesign Cost Estimation of Urban Railway Projects With Parametric Modeling”. Journal of Civil Engineering and Management 15, no. 4 (December 31, 2009): 405-409. Accessed November 25, 2024. https://mma.vgtu.lt/index.php/JCEM/article/view/6457.