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Shafaghat, A. , Khabbaz, H. , Moravej, S. , Shafaghat, A.. "Effect of Footing Shape on Bearing Capacity and Settlement of Closely Spaced Footings on Sandy Soil". World Academy of Science, Engineering and Technology, Open Science Index 143, International Journal of Geotechnical and Geological Engineering (2018), 12(11), 676 - 680.