1. Agthe, D.E. & R.B. Billings, 1978. The Impact of Gasoline Price on Urban Ridership. Annals of Regional Science, pp. 90?96.
2. Boyce, D.E. & W.B. Allen, 1973. Impact of Rapid Transit on Residential Development, Analysis of the Philadelphia-Lindenwold High-Speed Line, DOT OS-10043, Office of the Secretary, U.S. Department of Transportation, Washington, D.C.
3. City and County of San Francisco, Public Utilities Commission, 1984. Fare Revenue Projection Model, unpublished paper.
4. Delaware Valley Regional Planning Commission, 1979. Survey of Lindenwold Line Users, UMTA Project No. IT09?0073, Urban Mass Transportation Administration, U.S. Department of Transportation, Washington, D.C.
5. Ecosometrics Inc., 1984. Overview of the Fare Planning Process, Paper presented at the 1984 Mass Transit Industry Conference held at Deloitte Haskins and Sells, Washington, D.C., July 9, 1984.