A. DEMOULIN; A. BECKER; G. RIXHON; R. BRAUCHER; D. BOURLÈS; L. SIAME. Valley downcutting in the Ardennes (W Europe): Interplay between tectonically triggered regressive erosion and climatic cyclicity. Netherlands Journal of Geosciences, v. 91, p. 79 - 90, 1 Sep. 2012.