Seba Minsili, Lezin, Michel Mbessa, Wolfgang Nzie, Rodney Chiabi Nuh Mih, and Christian Magloire Ndjegwes. “Efficient Railway Gauge Conversion With Tunnel Reconstruction”. Journal of Railway Transportation and Technology 3, no. 1 (May 30, 2024): 1–16. Accessed April 17, 2025. https://www.jrtt.org/jrtt/article/view/24.