J. E. Gómez-Rocha, E. S. Hernández-Gress, C. E. Coronado Mondragón, and J.-F. Camacho-Vallejo, “Including Labor Flexibility in the Integrated Suppliers’ Selection and Aggregate Production Planning Problem Under Uncertainty”, Contemp. Math., vol. 7, no. 2, pp. 1625–1646, Feb. 2026.