1. On the feasibility of joint implementation of carbon emission reductions;Bohm,1994
2. The Relative Sensitivity of Ecosystems in Europe to Acidic Depositions;Chadwick,1990
3. Sulphur emission trading;Førsund,1993
4. Trading sulphur emissions quotas: third party constraints;Førsund,1994
5. Forest Damage and Air Pollution;GEMS,1988