J. KADHIM, Ali; B. ABDLJABAR, Mohmmad; S. KAREEM, Shatha. Cost-Benefit Analysis of Kirkuk Sulymaniya Railway Project. Journal of Engineering and Sustainable Development, Baghdad, Iraq, v. 17, n. 2, p. 210–232, 2013. Disponível em: https://jeasd.uomustansiriyah.edu.iq/index.php/jeasd/article/view/1125.. Acesso em: 22 jan. 2025.