Poulsen, Niels Erik, Lasse Gudmonsson, Jens Morten Hansen, and Yvonne Husfeldt. “Palynological Preparation Techniques, a New Macerationtank-Method and Other Modifications”. Danmarks Geologiske Undersøgelse Serie C 10 (November 30, 1990): 1–23. Accessed May 18, 2024. https://geusjournals.org/index.php/seriec/article/view/7104.