See discussions, stats, and author profiles for this publication at: https://www.researchgate.net/publication/223842859 Efficient 3D nonlinear Winkler model for shallow foundations ARTICLE in SOIL DYNAMICS AND EARTHQUAKE ENGINEERING · AUGUST 2009 Impact Factor: 1.22 · DOI: 10.1016/j.soildyn.2009.02.002 CITATIONS 5 READS 61 2 AUTHORS: Hesham El Ganainy RIZZO Associates 13 PUBLICATIONS 26 CITATIONS SEE PROFILE M.Hesahm El Naggar The University of Western Ontarioprofessor… 209 PUBLICATIONS 1,575 CITATIONS SEE PROFILE All in-text references underlined in blue are linked to publications on ResearchGate, letting you access and read them immediately. Available from: M.Hesahm El Naggar Retrieved on: 03 February 2016