Martínez, R. E., E. Caicedo Bravo, W. Alfonso Morales, and J. D. Garcia-Racines. “A Bi-Level Multi-Objective Optimization Model for the Planning, Design and Operation of Smart Grid Projects. Case Study: An Islanded Microgrid”. International Journal of Energy Economics and Policy, vol. 10, no. 4, May 2020, pp. 325-41, https://www.econjournals.com/index.php/ijeep/article/view/9343.