S. Seijo Fernández, I. del Campo, J. Echanobe, J. García-Sedano, E. Suso, and E. Arbizu, “Computational Intelligence techniques for maximum energy efficiency of an internal combustion engine and a steam turbine of a cogeneration process”, Int. J. Energy Environ. Eng., vol. 5, no. 2-3, May 2014, doi: 10.1007/s40095-014-0121-5.