Laurent Riquier, Nicolas Tribovillard, Olivier Averbuch, Xavier Devleeschouwer, Armelle Riboulleau. The Late Frasnian Kellwasser horizons of the Harz Mountains (Germany): Two oxygen-deficient periods resulting from different mechanisms..
Chemical Geology, Elsevier, 2006, pp.137-155.
⟨hal-00351107⟩