Pragian
- Pierre BULTYNCK & Léon DEJONGHE
- Devonian lithostratigraphic units (Belgium)
- volume 4 (2001)number 1-2 - Guide to a revised lithostratigraphic scale of Belgium
- Alain BLIECK
- Early Devonian heterostracans of Wihéries and Paliseul, with notes on pteraspids of La Gileppe and an acanthodian of Paliseul (Belgium)
- volume 18 (2015)number 1
- Léon DEJONGHE, Robert COLBACH & Eric GOEMAERE
- The lithostratigraphy of the lower Devonian formations of the Eisleck region (northern Luxembourg). Comparison with their Belgian lateral equivalents
- Volume 20 (2017)number 1-2
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