Spurk, M., Leuschner, H.H., Baillie, M.G.L., Briffa, K.R. and Friedrich, M., 2002
Depositional frequency of German subfossil oaks: climatically and non-climatically induced fluctuations in the Holocene.
The Holocene 12, 707-715
(keywords: oaks tree rings climate change proxy data global warming Germany Europe NH regional)