1.
Note on the stratigraphic position of the Zonderschot sands member of the Berchem formation (Miocene, Belgium)
Marine Miocene deposits in the Maaseik well 49W/220 in eastern Belgium: biostratigraphy by means of various microfossil groups
Studies in Tertiary Benthonic foraminifera in Belgium
Contribution to the study of planktonic foraminifera in the Belgian tertiary