1. Hysteresis in structural elements;Sozen;Appl. Mech. in Earthquake Eng., ASME,1974
2. Nonlinear dynamic analysis of R/C building structures;Otani;Can. J. Eng.,1980
3. Experimental investigation into the seismic behaviour of critical region of R/C components as influenced by moment and shear;Celebi,1973
4. Seismic behavior of moment-resisting R/C frames;Bertero;R/C structures in seismic zones, ACI,1977
5. Effect of stiffness degradation on earthquake ductility requirements;Clough,1966