1. Behavior of concrete under compressive loadings;Karsan;J Struct Div – ASCE,1969
2. Stress–strain relations for concrete under cyclic loading;Sinha;J Am Concrete Institute,1964
3. Concrete in biaxial cyclic compression;Buyukozturk;J Struct Eng,1984
4. Softening response of plain concrete in direct tension;Gopalaratnam;ACI J Proc,1985
5. Fracture of concrete under complex stress;Mier;HERON,1986