Keutgen N. A bioclast-based astronomical timescale for the Maastrichtian in the type area (southeast Netherlands, northeast Belgium) and stratigraphic implications: the legacy of P.J. Felder. NJG [Internet]. 2018Nov.23 [cited 2026Oct.17];97:229-60. Available from: https://njgjournal.nl/index.php/njg/article/view/11642