1. ACI 318. Building code requirements for structural concrete and commentary. American Concrete Institute (ACI); 2008.
2. Eurocode 2. Design of concrete structures, part 1-1: general rules and rules for buildings. European Committee for Standardization (CEN); 2005.
3. Design criteria of reinforced columns under axial load and biaxial bending;Bresler;ACI J,1960
4. Reinforced concrete design by computer;Hulse,1986
5. Reinforced concrete design;Spiegel,1988