1. Omkörningar av personbilar;Åhman,1968
2. On a model for traffic on a two-lane road;Erlander;StrBau Verkehrstech.,1969
3. A mathematical model for traffic on a two-lane road with some empirical results—I. Theoretical model and estimation problems;Erlander;Transpn Res.,1971
4. Statistics with Applications to Highway Traffic Analyses;Greenshields,1952
5. Studies of Sight Distances;Gustavsson,1969