1. Direct displacement–based seismic design of concrete buildings;Priestley;New Zeal Soc Earthquake Eng,2000
2. Equivalent damping in support of direct displacement-based design;Dwairi;J Struct Eng,2007
3. Influence of hysteretic behavior on equivalent period and damping of structural systems;Kwan;J Struct Eng,2003
4. Standard specifications for highway bridges. American Association of State Officials. Washington, D.C: AASHTO; 1996.
5. Uniform building code. International Conference of Building Officials. California; 1997.