1. The relative pollen productivity and representation of north European trees, and correction factors for tree pollen spectra;Andersen;Dan. Geol. Unders. Række II,1970
2. Soil Maps of the Czech Republic 1:50 000;AOPK,2005
3. Reconstructing woodland vegetation and its exploitation by past societies, based on the analysis and interpretation of archaeological wood charcoal macro-remains;Asouti;Environ. Archaeol.,2005
4. The role of man in European vegetation history;Behre,1988
5. How mankind has shaped European nature;Berglund;Veg. Hist. Archaeobot.,2011