Michiel Dusar, V. Langenaeker, and L. Wouters (2002)
Permian – Triassic – Jurassic lithostratigraphic units in the Campine basin and the Roer Valley Graben (NE Belgium).
Geologica Belgica, 4(1-2):107-112.
In Bultynck&Dejonghe;, eds. Guide to a revised lithostratigraphic scale of Belgium
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