1. Allen, W. Bruce and David E. Boyce. (1973). ?Transportation Research: Problems, Prospects and Possibilities,? presented to the Regional Science Association, Atlanta, Georgia.
2. Alonso, William (1964). Location and Land Use, Cambridge, Mass.: Harvard University Press.
3. Appleyard, Donald and Mark Lintell (1971). ?Environmental Quality of City Streets: The Residents' Viewpoint,? Highway Research Record, #356.
4. Barker, William G. (1973). The Use of Models in Urban Transportation Planning, U.S.D.O.T., Office of the Secretary.
5. Brand, Daniel (1970a). Dual Mode Transportation Systems, Urban Systems Laboratory, MIT.