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.