1. A method to evaluate accident-prone locations in routes and its application;Itakura;Traffic engng,1968
2. Econometric methods;Johnston,1972
3. Statistical analysis of accident proneness of roadway sections;Koshi,1978
4. Traffic accident analysis;Michishita;Traffic Engng,1974
5. Identification of hazardous road locations;Mitani;Traffic Engng,1977