1. Anon., 1990. The National Atlas of Sweden. The Forest. SNA Publishing. Stockholm.
2. Anon., 1998. Skogsstyrelsen föreskrifter och allmänna råd om skador på mark och vatten. SKSFS 1998:5. Skogsstyrelsens författningssamling. ISSN 0347-5212 (in Swedish).
3. Anon., 1999. Energy in Sweden. ET 82:1999. Swedish National Energy Administration, Stockholm, Sweden.
4. Arvidsson, H., Lundkvist, H., 2001. Wood Ash Application in Spruce Stands. Appendix IV in thesis by Arvidssor, H. 2001. Wood Ash Application in Spruce Stands. Effects on Ground Vegetation, Tree Nutrient Status and Soil Chemistry. Acta Universitatis Agriculturae Sueciae, Sylvestria 221. Doctoral dissertation. ISSN 1401-6230, ISBN 91-576-6305-X.
5. Needle chemistry in young Norway spruce stands after application of crushed wood ash;Arvidsson;Plant Soil,2002