References

Robaszynski, F., Dhondt, A.V. & Jagt, J.W.M. 2002. Cretaceous lithostratigraphic units (Belgium). In: Bultynck, P. & Dejonghe, L. (eds.), Guide to a revised lithostratigraphic scale of Belgium. Geologica Belgica, 4 (for 2001): 121-134.