1. Bureau of Explosives (BOE), Annual Report of Hazardous Materials Transported by Rail: Calendar Year 2006, Association of American Railroads: Bureau of Explosives, Pueblo, CO, 2007.
2. Transportation Research Board (TRB), Ensuring Railroad Tank Car Safety, Special Report 243, Transportation Research Board, National Research Council, National Academy Press, Washington, DC, 1994.
3. Federal Railroad Administration (FRA), Ensuring Tank Car Safety: A Government and Industry Partnership, Federal Railroad Administration, Washington, DC, 1996. (http://www.fra.dot.gov/safety/hazmat/pdf/program.pdf, downloaded May 2003).
4. C.P.L. Barkan, D.J. Pasternak, Evaluating new technologies for railway tank car safety through cooperative research, In: Proceedings of the World Congress on Railway Research-1999, Tokyo, Japan, 1999, CD.
5. Lester, F. Tank car safety continues to improve. Railway Age, (http://www.utlx.com/utc_news/current/Union%20Tank%20Car.7.31.03.pdf), July 2003.