Henk J.T. Weerts, and Henk J.A. Berendsen. “Late Weichselian and Holocene Ftuvial Palaeogeography of the Southern Rhine-Meuse Delta (the Netherlands)”. Netherlands Journal of Geosciences, vol. 74, Jan. 1995, pp. 199-12, doi:10.70712/njg.v74.12421.