1. A speed limiter in the car for increased safety and better environment;Almquist,1990
2. Methodik der Fahrprobe;Barthelmess;Zeitschrift für Verkehrssicherheit,1974
3. Sicherheit im Ferienreiseverkehr;Brühning,1989
4. Human observation of interaction processes in traffic out of observed persons′ cars;Chaloupka,1990
5. How to identify risks by observing human behaviour and interaction;Chaloupka,1990