Z. Luo, L. Wang, W. Gong, and C. H. Juang. “Probabilistic Approaches for Ultimate Resistance of Drilled Shafts in Sands Considering Spatial Variability”. Geotechnical Engineering Journal of the SEAGS & AGSSEA 46, no. 2 (June 30, 2015): 102–110. accessed May 13, 2025. https://ph01.tci-thaijo.org/index.php/SEAGS_AGSSEA_Journal/article/view/259294.