1. Area-wide urban traffic calming schemes: a meta-analysis of safety;Elvik;Accid. Anal. Prev,2001
2. Uheldsmodel for bygader – Del 1: Model for 3- og 4-benede kryds;Greibe,1995
3. Observational Before-After Studies in Road Safety;Hauer,1997
4. Hemdorff, S., 1990. Trafiksikkerhed: Vurdering af inddeling i ap-typer til brug ved sortpletudpegning. Road Directorate, Report 90, Denmark.
5. Hemdorff, S., 1993. Trafiksikkerhed – Ny inddeling i krydstyper. Road Directorate, Report 111, Denmark.