John Kuna Raj. “Shear Strength of Earth Materials in a Weathering Profile Over Granite”. Geotechnical Engineering Journal of the SEAGS & AGSSEA 53, no. 1 (September 28, 2024): 22–29. accessed September 11, 2026. https://ph01.tci-thaijo.org/index.php/SEAGS_AGSSEA_Journal/article/view/258563.