Testimony presented to the Senate Commerce, Science, and Transportation Committee on March 23, 2004.
Riley, K. Jack, Terrorism and Rail Security. Santa Monica, CA: RAND Corporation, 2004. https://www.rand.org/pubs/testimonies/CT224.html.
Riley, K. Jack, Terrorism and Rail Security, Santa Monica, Calif.: RAND Corporation, CT-224, 2004. As of January 12, 2022: https://www.rand.org/pubs/testimonies/CT224.html