Shoaei, M.D., Alkarni, A., Noorzaei, J., Jaafar, M.S. and Huat, B.B.K. 2012. Review of available approaches for ultimate bearing capacity of two-layered soils. Journal of Civil Engineering and Management. 18, 4 (Sep. 2012), 469-482. DOI:https://doi.org/10.3846/13923730.2012.699930.