Badillo-Piña, Isaias José, Ricardo Tejeida-Padilla, and Oswaldo Morales-Matamoros. 2008. “A VIABLE SYSTEMS MODEL APPROACH TO ENTERPRISE RESOURCES PLANNING SYSTEMS”. Proceedings of the 52nd Annual Meeting of the ISSS - 2008, Madison, Wisconsin 3 (1). https://journals.isss.org/index.php/proceedings52nd/article/view/971.