1. Earthquake Protective Systems www.earthquakeprotection.com
2. Gilani A.S.J. Whittaker A.S. Fenves G. Fujisaki E. (1999). Seismic Evaluation and Retrofit of 230-kV Porcelain Transformer Bushings. PEER UC Berkeley Report 1999/14.
3. Gilani A.S.J. Whittaker A.S. Fenves G. Chen C.H. Ho H. Fujisaki E. (2000). Seismic Evaluation and Analysis of 230-kV Disconnect Switches. PEER UC Berkeley Report 2000/06.
4. ICBO ES. 2007. Acceptance Criteria for Seismic Qualification Testing of Nonstructural Components AC156. California: ICBO ES.