Determining the optimum installation of energy storage systems in railway electrical infrastructures by means of swarm and evolutionary optimization algorithms - Roch Dupré, David; Gonsalves, Tad; Cucala García, María Asunción; Rodríguez Pecharromán, Ramón; López López, Álvaro Jesús; Fernández Cardador, Antonio (International Journal of Electrical Power & Energy Systems, 2021)