M. Romero Montoya, E. Granillo, R. González Velázquez, M. B. Bernabé Loranca, and M. Estrada Analco, “A Hybrid VNS/TABU Search Algorithm for Solution the P-Median Problem”, Int. Journal of COP and Infor., vol. 11, no. 2, pp. 67–74, Jan. 2020.