Muñoz, Lucio, 2010. "Introducing a Simple Qualitative Comparative Dichotomy Approach to State and Clarify Sustainable Development and Sustainability Related Concepts and Issues”, Journal of Sustainability, Issue 2, Number 4(Spring), Rio Rancho, New Mexico USA.
https://www.researchgate.net/publication/281244558_Introducing_a_Simple_Qualitative_Comparative_Dichotomy_Approach_to_State_and_Clarify_Sustainable_Development_and_Sustainability_Related_Concepts_and_Issues