1. Papageorgiou, M., “Traffic Control,” Handbook of Transportation Science, R.W. Hall, Editor, Kluwer Academic, 1999, 233–267.
2. Meldrum, D., and Taylor, C, Freeway traffic data prediction using artificial neural networks and development of a Fuzzy Logic Ramp Metering Algorithm Final Technical Report, Washington State Department of Transportation Report No. WARD 365.1, 1995.
3. Zhang, H.M., Ritchie S. G., and Recker, W. W., “Some general results on the optimal ramp. control problem,” Transportation Research.-C, 4, 1996, 51–69.
4. Helleland, N., Joeppen, W., and Reichelt, P., “Die Rampendosierung an der A5 Bonn/Siegburg der BAB 3 in Richtung Koln,” Strassenverkehrstechnik, 22, 1978, 44–51
5. NN: Ramp Metering in Auckland, Traffic Engineering and Control, 24, 1983, 552–553.