1. National and regional forecast of rail demand to 1985;Babcock;1981 Proceedings of the Transportation Research Forum,1981
2. Forecast of agricultural rail demand to 1985;Babcock;1982 Proceedings of the Transportation Research Forum,1982
3. 1985 forecast: rail share of intercity manufactures freight markets;Babcock;1983 Proceedings of the Transportation Research Forum,1983
4. Box, G.E.P., Jenkins, G.M., 1976. Time Series Analysis: Forecasting and Control, 2nd ed. Holden-Day, San Francisco, CA.
5. Boyer, K.D., 1997. Principles of Transportation Economics. Addison-Wesley, Reading, MA.