Tarazona, Claudia. “Mathematical Model to Determine the Index of Instability in Clay Soils for Road Slopes, Huaraz – Ancash”. Revista del Instituto de investigación de la Facultad de minas, metalurgia y ciencias geográficas 20, no. 40 (December 15, 2017): 3–7. Accessed July 17, 2024. https://revistasinvestigacion.unmsm.edu.pe/index.php/iigeo/article/view/14382.