Ruiz-Vanoye, . J. A., Díaz-Parra, O., Trejo-Macotela, F. R. ., & Ramos-Fernández, J. C. . (2020). Editorial: P versus NP problem from Formal Languages Theory View. International Journal of Combinatorial Optimization Problems and Informatics, 12(1), 1–8. https://doi.org/10.61467/2007.1558.2021.v12i1.207