1. J.F. Schlaefli, “Street Traffic Control by Computer--a state-of-the-art discussion,” Workshop on Computer Traffic Control, University of Minnesota, March, 1974.
2. N.R. Kleinfield, “Computerized Traffic Control,” The Wall Street Journal, August 13, 1974
3. M.L. Manheim, “Search and Choice in Transport Systems Analysis,” Highway Research Record No. 293: Transportation Systems Planning, 1969.
4. N.A. Irwin and H.G. Von Cube, “Capacity Restraint in Multi-Travel Mode Assignment Programs,” Highway Research Board Bulletin 347: Trip Characteristics and Traffic Assignment, 1962.
5. Comsis Corp., “Traffic Assignment-methods, applications, products,” U.S. Department of Transportation, Federal Highway Administration, 1973.