1. 2001. Arbeidsreisene for Ansatte i AS Oslo Sporveier [The Work Travels of the Employees of AS Oslo Sporveier], Vf-Notat 9/01. Western Norway Research Institute: Sogndal (in Norwegian).
2. 1996. Evolutionary trends in environmental reporting. In Industry and the Environment: Practical Applications of Environmental Management Approaches in Business, (eds). Aarhus School of Business Corporate Technology and Environment Management Research Group: Aarhus.
3. A Stakeholder Framework for Analyzing and Evaluating Corporate Social Performance
4. 2001. Transport på vej ind i Virksomhedernes Miljøarbejde? [Is Transport Becoming Part of Enterprise Environmental Work?]. Transport-og Luftkvalitetskontoret, Miljøstyrelsen-Aalborg University (in Danish, with English summary).
5. Evaluating corporate environmental reporting