Muñoz, Lucio, 2011.  A Qualitative Comparative Way of Pointing Out the Expected Social Externalities Associated With the Creep in Nature of Current Eco-Economic Approaches to Development Issues, Journal of Sustainability, Issue 3, Number 3(Winter), Rio Rancho, New Mexico USA.

https://www.researchgate.net/publication/281244571_A_Qualitative_Comparative_Way_of_Pointing_Out_the_Expected_Social_Externalities_Associated_With_the_Creep_in_Nature_of_Current_Eco-Economic_Approaches_to_Development_Issues