1. Effect of rate application of load on the compressive strength of concrete;Abrams;ASTM J,1917
2. CEB-FIP model code 1990, Thomas Telford, London, http://fib.epfl.ch/; 1993.
3. Behaviour of concrete under biaxial stress;Kupfer;ACI J,1969
4. William K, Warnke E. Constitutive model for the triaxial behaviour of concrete. In: International association for bridge and structural engineering (IABSE), vol. 19. Istituto Sperimentale Modelli e Strutture (ISMES), Bergamo, 1975.
5. Ottosen NS. Failure and elasticity of concrete, Technical Report Risø-M-1801, Danish atomic energy commission research establishment Risø, Roskilde, July 1975.