Márquez Díaz, Luis Gabriel. “Willingness to Pay for a High-Speed Passenger Rail Service Between Barranquilla and Cartagena”. Revista EIA / English version 13, no. 26 (June 21, 2017). Accessed May 10, 2024. https://revista.eia.edu.co/index.php/Reveiaenglish/article/view/1100.