1. Valuing the wolf in Sweden. Are benefits contingent on the supply?;Boman,1999
2. The bioeconomics of the spatial distribution of an endangered species: the case of the Swedish wolf population;Boman;Journal of Bioeconomics,2003
3. Environment and Ecology;Bromley,1991
4. Natural Resource Economics. Notes and Problems;Conrad,1987
5. Dahle, L., Solberg, B., Sodal, D., 1987. Haldningar and betalingsvillighet for bjorn, jerv og ulv i Noreg. Report, Dept. of Forest Economics, Agricultural University of Norway, Aas.