P. G. E. F. Augustinus, and H. Th. Riezebos. “Some Sedimentological Aspects of the Fluvioglacial Outwash Plain Near Soesterberg (The Netherlands)”. Netherlands Journal of Geosciences (January 1, 1971): 341-348. Accessed August 31, 2026. https://njgjournal.nl/index.php/njg/article/view/14839.