1. I. McLean, David , D.Thad Saunders , H. Harold Hahnenkratt . "Seismic evaluation and retrofit of bridge substructures with spread and pile-supported foundations." (1995).
2. Seismic retrofit of spread footings supporting bridge columns with short dowels;Saiidi;Constr. Build. Mater.,2001
3. Seismic assessment and retrofit of bridge column footings;Xiao;Struct. J.,1996
4. Practical formula for dimensioning a rectangular footing;Algin;Eng. Struct.,2007
5. A. Hallak, "Soil-Structure Interaction and Foundation Vibrations" , 2012.