Beets , Dirk J., and Adam J. F. van der Spek. 2000. “The Holocene Evolution of the Barrier and the Back-Barrier Basins of Belgium and the Netherlands As a Function of Late Weichselian Morphology, Relative Sea-Level Rise and Sediment Supply”. Netherlands Journal of Geosciences 79 (March):3-16. https://doi.org/10.1017/S0016774600021533.