Assessment of the tunnel train system at the Houston Intercontinental Airport : final report - SRI International; Yen, A. M.; United States. Urban Mass Transportation Administration. Office of Socio-Economic Research and Special Projects; United States. Urban Mass Transportation Administration (U.S. Dept. of Transportation ; available through the National Technical Information Service, 1977)
Prepared for Urban Mass Transportation Administration, Office of Technology Development & Deployment, Office of Socio-Economic Research and Special Projects.