1. ECSC-STEELRES 7C Project No. 7210-SA/821, Increased use of higher strength steel in structures, 1988.07.01-1989.06.30.
2. EN1998-1-1, Eurocode 8, Design of structures for earthquake resistance — Part 1, General rules, seismic actions and rules for buildings, CEN, European Committee for Standardization, 2004.
3. P100-1, Romanian Seismic Design Code — Part 1, General Rules, 2006.
4. Ductility of Steel Structures: The Model of Interactive Hinge;Ivany M.;Pollak Periodica,2006