1. American Association of State Highway and Transportation Officials (AASHTO) (2008). "AASHTO LRFD Bridge Design Specifications Customary U.S. Units 4 th Ed. Section 10 `Foundations'" Washington D.C.
2. Armour T. Groneck P. Keeley J. and Sharma S. (2000). "Micropile Design and Construction Guidelines Implementation Manual" Report No. FHWA-SA-97-070 June 376 p.
3. Atlaee A. Burns A. and Shah H. (2010). "Hammer-Grout Piles at the Bronx-Whitestone Bridge " Proceedings of the Deep Foundations Institute 35 th Annual Conference Hollywood CA 11p.
4. Axtell P. Thompson R. and Brown D. 2009. "Drilled Shaft Foundations for the kciCON Missouri River Bridge." Proceedings of the Deep Foundation Inst. 34th Annual Meeting Kansas City 10p.
5. Effect of Construction on Axial Capacity of Drilled Foundations in Piedmont Soils