1. Foundation Analysis and Design;Bowles,1977
2. Pullout resistance of rough rigid piles in granular soils;Das;Soils and Foundations,1977
3. Pullout resistance of deeply buried anchors in sand;Esquivel-Diaz,1967
4. Penetration tests and bearing capacity of cohesionless soils;Meyerhof;Jour, of the Soil Mech, and Found. Div., ASCE,1956
5. Uplift resistance of inclined anchors and piles;Meyerhof,1973