John W.M. Jagt, Paul H. Lambers, Eric W.A. Mulder and Anne S. Schulp (1999) “Proceedings of the Third European Workshop on Vertebrate Palaeontology (Maastricht, May 6-9, 1998): Preface”, Netherlands Journal of Geosciences, p. 253. Available at: https://njgjournal.nl/index.php/njg/article/view/12288 (Accessed: 7April2026).