H.J.A. Berendsen, B Makaske, O. van de Plassche, M.H.M van Ree, S. Das, M. van Dongen, S. Ploumen, & W. Schoenmakers. (2007). New groundwater-level rise data from the Rhine-Meuse delta – implications for the reconstruction of Holocene relative mean sea-level rise and differential land-level movements. Netherlands Journal of Geosciences, 86, 333 - 354. https://doi.org/10.1017/S0016774600023568