1. The EU ADVANCED project: Description and analysis of post-license driver and rider training, CIECA;Advanced,2002
2. Description of post licensing measures in Austria;Bartl,2000
3. Directive 91/439/EEC on driving licenses. http://ec.europa.eu/transport/home/drivinglicence/overview/basis_en.htm
4. The handbook of road safety measures;Elvik,2004