“Mineralogical Analysis of the Clay Fraction of Tropical Soils from Peru by X-Ray Diffractometry and Mössbauer Spectroscopy”. Revista de Investigación de Física 17, no. 01 (July 15, 2014): 1–6. Accessed June 19, 2025. https://revistasinvestigacion.unmsm.edu.pe/index.php/fisica/article/view/8663.