Authors: Menning, M Weyer, D Wendt, I Riley, NJ Davydov, VI

Citation: M. Menning et al., Discussion on high-precision Ar-40/Ar-39 spectrum dating on sanidine from the Donets Basin, Ukraine: evidence for correlation problems in the Upper Carboniferous - Journal, Vol. 156, 1999, 527-533, J GEOL SOC, 158, 2001, pp. 733-736

Authors: Cronier, C Bartzsch, K Weyer, D Feist, R

Citation: C. Cronier et al., Larval morphology and ontogeny of a late Devonian Phacopid with reduced sight from Thuringia, Germany, J PALEONTOL, 73(2), 1999, pp. 240-255