1. Appelberg, M.: 1998, Restoration Ecology
6, 343.
2. Appelberg, M., Lingdell, P.E. and Andrén, C.: 1999, Water, Air, and Soil Pollution
85, 883.
3. Appelberg, M. and Svenson, T.: 2000, Water, Air, and Soil Pollution (THIS VOLUME)
4. Appelberg, M., Henrikson, B.I., Henrikson, L. and Svedäng, M.: 1993, Ambio
22, 290.
5. Bergström, A-K.: 1999, Dept. Environmental Assessment, Uppsala, Sweden Report 1999, 11 (in Swedish).