F. de Cuadra, A. Fernández-Cardador, J. de Juan, M. Herrero, "Energy-saving automatic optimisation of train speed commands using direct search techniques", presentado en 5th International Conference on Computer Aided Design, Manufacture and Operation in the Railway and Other Advanced Mass Transit Systems - COMPRAIL 1996, Berlín, Alemania, 21-23 agosto 1996. En: Computers in railways V: Volume 1: Railway systems and management., pp. 337-346, doi: 10.2495/CR960351