1. American Society of Civil Engineers, ASCE (1998). California refines design/build transportation scheme. Civil Engineering, 68(8), 22.
2. Baukney, H. (2001, February 15). Did somebody say convenient? CIO Magazine.
3. Bay Area Toll Authority, BATA (2002). Toll bridge report to the California legislature, FY 2001–2002. Metropolitan Transportation Commission, Oakland, CA.
4. California Private Transportation Company, CPTC (2002). 91 express lanes project history. Available at: http://www.91expresslanes.com.
5. Cellular Telecommunications and Internet Association, CTIA (2000). Semi-annual wireless industry survey. Washington, DC.