1. Design of torsionally unbalanced structural systems based on code provisions I: Ductility demand
2. National Building Code of Canada, Subsection 4.1.9, National Research Council of Canada, Ottawa, 1990.
3. New Zealand Standard NZS 4203:1984, ‘Code of practice for general structural design and design loadings for buildings’, Standards Association of New Zealand, Wellington, New Zealand, 1984.
4. Uniform Building Code, Section 23.12: Earthquake Regulations, International Conference of Building Officials, Whittier, CA, 1988.
5. Seismic design requirements in a Mexican 1976 code