Mendez-Diaz, Jorge Ivan, Oswaldo Morales-Matamoros, Ricardo Tejeida-Padilla, and Gilberto J. Vazquez-Espinosa. 2009. “THE VALUE EQUATION”. Proceedings of the 53rd Annual Meeting of the ISSS - 2009, Brisbane, Australia 1 (1). https://journals.isss.org/index.php/proceedings53rd/article/view/1230.