1. Vegetation zones and their sections in northwestern Europe;Ahti;Ann. Botan. Fenn.,1968
2. Die Bedeutung des toten Holzes im Wald;Albrecht;Forstw. Cbl.,1991
3. Bryophytes and decaying wood – a comparison between managed and natural forest;Andersson;Holarctic Ecol.,1991
4. Anonymous, 1994. Skogsvårdslagen 1993:553, Handbok. Skogsstyrelsen, pp. 66 (in Swedish)
5. Anonymous, 1997. Skogsreservat i Sverige. Naturvårdsverket, Rapport 4707, pp. 68 (in Swedish)