J.J.P. Zijlstra, M.H.M.P. Brouwers, H. Brinkhuis, P.L. de Boer. Microfacies analysis of Cretaceous/Tertiary boundary sections in the quarries Geulhemmerberg and Curfs, SE Netherlands. njg [Internet]. 1996Jan.1 [cited 2026Apr.1];75:133-51. Available from: https://njgjournal.nl/index.php/njg/article/view/12367