K. Mebinck, H. Middelkoop, N. van Diepen, E.R van der Graaf and R.J. de Meijer (2007) “Radiometric fingerprinting of fluvial sediments in theRhine-Meuse delta, the Netherlands – a feasibility test”, Netherlands Journal of Geosciences, 86, pp. 229 - 240. doi: 10.1017/S0016774600077829.