Cruz Crespo, Elia. “Substrates Derived from Simple Materials by Means of an Optimization Program by Using Physical and Chemical Variables”. REVISTA TERRA LATINOAMERICANA 28, no. 3 (September 1, 2010): 219–229. Accessed April 7, 2025. https://terralatinoamericana.org.mx/index.php/terra/article/view/1228.