SCHREIBER, Simeon. Optimizing the Project Development in Transportation Systems: Economical and Mathematical Models. Promet - Traffic&Transportation, [S. l.], v. 15, n. 4, p. 201–204, 2003. Disponível em: https://traffic2.fpz.hr/index.php/PROMTT/article/view/2032. Acesso em: 27 aug. 2025.