Chinnapat Buachart, Chayanon Hansapinyo, and Worsak Kanok-Nukulchai. “ANALYSIS OF AXIAL LOADED PILE IN MULTILAYERED SOIL USING NODAL EXACT FINITE ELEMENT MODEL”. GEOMATE Journal, vol. 14, no. 44, Mar. 2018, pp. 1-7, https://geomatejournal.com/geomate/article/view/1710.