M. De Craen, and R. Swennen. “Sedimentology and Diagenesis of the Ankeritized Basal Zechstein Conglomerate in the Campine Basin (Bree Borehole, NE Belgium)”. Netherlands Journal of Geosciences 71 (January 1, 1992): 145-160. Accessed April 3, 2026. https://njgjournal.nl/index.php/njg/article/view/12539.