1. Caltrans seismic retrofit program http://www.dot.ca.gov/hq/paffairs/about/retrofit.htm
2. WSDOT Washington State's bridge seismic retrofit program http://www.wsdot.wa.gov/eesc/bridge/preservation/pdf%5CBrgSeismicPaper.pdf
3. Bridge seismic retrofitting practices in the central and southeastern United States;Wright;Journal of Bridge Engineering,2011
4. Seismic reliability of a cable-stayed bridge retrofitted with hysteretic devices;Casciati;Computer and Structures,2008
5. Measuring post-disaster transportation system performance: the 1995 Kobe earthquake in comparative perspective;Chang;Transportation Research Part A: Policy and Practice,2001