1. Flow and distribution of chromium in the Swedish environment: a new approach to studying environmental pollution;Anderberg;Ambio,1989
2. Control of phosphorus discharges: present situation and trends;Balmér;Hydrobiologia,1988
3. Miljön i Nybromänniskan, naturen och kretsloppen;Björn,1994
4. Brattberg, G., Manager, 1992, Stockholm Water Ltd., Stockholm, personal communication.
5. Natural resource scarcity and economic growth revisited: economic and biophysical perspectives;Cleveland,1991