1. 1981. Problems in predicting market response to new transportation technology. In New Horizons in Travel-Behavior Research, (eds). Lexington: Toronto; 465-487.
2. Bilindustriföreningen AB Bilstatistik and Gamlin and Zeipel Kommunikation. 1998. Bilismen i Sverige 1998. Wallin and Dalholm: Stockholm.
3. 1993. An Automotive Manufacturer's Alternative Fuel Perspective. Proceedings from the First Annual World Car 2001 Conference, 51-55.