1. Theory of traffic flow. Proc. Symp. Theory of traffic flow, Warren/Mich. 1959. Amsterdam: Elsevier 1961.
2. Haight, F.A.: Mathematical theories of traffic flow. New York: Academic Press 1963.
3. Drew, D.R.: Traffic flow theory and control. New York: McGraw-Hill 1968.
4. Sp. Rep.;DL Gerlough,1964
5. Vehicular traffic science. Proc. 3rd Int. Symp. Theory of traffic flow, New York 1965, New York: Elsevier 1967.