Behre, K., Hölzer, A., & Lemdahl, G. (2005). Botanical macro-remains and insects from the Eemian and Weichselian site of Oerel (northwest Germany) and their evidence for the history of climate.

Behre, Karl-Ernst, Adam Hölzer, und Geoffrey Lemdahl. Botanical Macro-remains and Insects From the Eemian and Weichselian Site of Oerel (northwest Germany) and Their Evidence for the History of Climate. 2005.