Hernandez Valencia, Juan Pablo, Jesus Maria Lopez-Lezama, and Bonie Johana Restrepo Cuestas. “Assessing the Vulnerability of Power Systems Using Multilevel Programming: A Literature Review”. Revista Ingenierías Universidad de Medellín 20, no. 38 (March 15, 2021): 99-117. Accessed September 25, 2021. https://revistas.udem.edu.co/index.php/ingenierias/article/view/3138.