Th.B. Roep and D.J. Beets (1988) “Sea level rise and paleotidal levels from sedimentary structures in the coastal barriers in the western Netherlands since 5600 BP”, Netherlands Journal of Geosciences, pp. 53-60. Available at: https://njgjournal.nl/index.php/njg/article/view/12966 (Accessed: 5April2026).