1.
Heilmann-Clausen C, Birkelund T. Lower Cretaceous dinoflagellate biostratigraphy in the Danish Central Trough. seriea [Internet]. 1987 Dec. 30 [cited 2024 May 8];17:1-89. Available from: https://geusjournals.org/index.php/seriea/article/view/7036