Fuentes-Penna, A., O. Díaz-Parra, J. de D. González-Ibarra, P. Espejel Flores, E. Simancas-Acevedo, J. Aguilar-Ortiz, and J. A. Ruiz-Vanoye. “Complexity on Fuzzy Set and Fuzzy Logic for Air Quality: Complexity on Fuzzy Set and Fuzzy Logic for Air Quality”. International Journal of Combinatorial Optimization Problems and Informatics, vol. 14, no. 2, June 2023, pp. 43-48, https://ijcopi.org/ojs/article/view/367.