1. ACI Committee 318, Building code requirements for structural concrete (ACI 318-19) (Reapproved 2022), American Concrete Institute, 2019.
2. Eurocode2, Design of concrete structures, Part 1-1: General rules and rules for buildings, Europan Committee for Standardization, 2004.
3. J.G. MacGregor, Modification of the ACI rectangular stress block for high-strength concrete, ACI Struct. J. 94(1) (1997) 40-48. https://doi.org/10.14359/459.
4. A two parameter stress block for high-strength concrete;Attard;ACI Struct. J.,1998
5. Stress block parameters for high-strength concrete members;Bae;ACI Struct. J.,2003