1. Buchanan C., 1963. Traffic in Towns, H.M.S.O., London, 1963.
2. A Methodology for the Compilation of the Environmental Capacity of Roadway Networks;Sharpe,1972
3. Environmental capacity of roads;Holdsworth,1979
4. Road pricing and network equilibrium;Ferrari;Transport. Res. part B,1995
5. Fondamenti Di Pianificazione dei Trasporti;Ferrari,2001