R.M.J. Schielen, P. Jesse, and L.J. Bolwidt. “On the Use of Flexible Spillways to Control the Discharge Ratio of the Rhine in the Netherlands: Hydraulic and Morphological Observations”. Netherlands Journal of Geosciences 86 (July 1, 2007): 159. Accessed April 3, 2026. https://njgjournal.nl/index.php/njg/article/view/11768.