1. Regression-based tests for over dispersion in Poisson model;Cameron;Journal of Econometrics,1990
2. Traffic Safety;Evans,2004
3. Older Driver Highway Design Handbook;FHWA,1998
4. Handbook for Older Drivers and Pedestrians;FHWA,2001
5. Guide for Reducing Collisions Involving Older Drivers, NCHRP Report 500, vol. 8;FHWA,2004