1. J.S. Russell, Report of the fourteenth meeting of the British Association for the Advancement of Science, York, Sept. 1844, London 1845, 311-390, Plates XLVII-
2. H. Lenz, Entwicklung nichtlinearer, diskreter Regler zum Abbau von Verkehrsfiussinhomogenitaten mit Hilfe makroskopischer Verkehrsmodelle, PhD Thesis, (Shaker, Aachen, 1999).
3. H. Lenz, R. Sollacher, and M. Lang, Nonlinear Speed-Control for a Continuum Theory of Traffic Flow, pp. 67–72 (IFAC’99, 14th World Congress, Beijing, China, Vol. Q, 1999).
4. B.S. Kerner and P. Konhäuser, Structure and parameters of clusters in traffic flow, Phys. Rev. E 50, 54–83 (1994).
5. D. Helbing, Fundamentals of Traffic Flow, Phys. Rev. E 55, 3731–3738 (1997).