Cazabal-Valencia, L. ., S. O. Caballero Morales, J. L. Martínez Flores, and D.-E. . Gibaja-Romero. “Capacitated Multi-Facility Location Problem on the Ellipsoid With Multi-Zone Restrictions”. International Journal of Combinatorial Optimization Problems and Informatics, vol. 13, no. 3, Aug. 2022, pp. 75-86, https://ijcopi.org/ojs/article/view/298.