Ruiz-Vanoye, J. A., A. Fuentes-Penna, O. Díaz-Parra, R. A. Barrera-Cámara, M. Lezama-León, and E. Lezama-León. “Editorial for Volume 9 Number 3: Models, Resources and Activities of Project Scheduling Problems”. International Journal of Combinatorial Optimization Problems and Informatics, Vol. 9, no. 3, Mar. 2018, pp. 1-17, https://ijcopi.org/ojs/article/view/98.