1. Changes in biotic conditions and metal deposition in the last millenium as reflected in ombrotrophic peat in Draved Mose, Denmark;Aaby;Dan. Geol. Unders., Arbog 1978,1979
2. Pb-210 dating and lead deposition in the ombrotrophic peat bog, Draved Mose, Denmark;Aaby;Dan. Geol. Unders., Arbog 1978,1979
3. Chemische Untersuchung des Torfs;Achard;Chemische Annaler für die Freunde der Naturlehre, Arzneygelahtheit, Haushaltungskunst und Manufacturen,1786
4. Crop production on peat—vegetables;Adamson,1975
5. The ion exchange properties of peat, Part IV;Aho,1984