Parra Santiago, José Ignacio, Alberto Camarero Orive, Antonio Gil Ropero, Nicoletta González Cancelas, and Javier Vaca Cabrero. “DEA-Bootstrapping Analysis of the Financial Efficiency Model of the Spanish Port System”. Revista Ingeniare 31 (December 19, 2024). Accessed November 8, 2026. https://ingeniare.uta.cl/index.php/inge/article/view/698.