Torbjorn E. Tornqvist, Henk J.T. Weerts, Henk J.A. Berendsen. Definition of two new members in the upper Kreftenheye and Twente Formations (Quaternary, the Netherlands): a final solution to persistent confusion?. njg [Internet]. 1994Jan.1 [cited 2026Apr.2];72:251-64. Available from: https://njgjournal.nl/index.php/njg/article/view/12513