Haelters, Jan, Francis Kerckhof, Thierry G. Jacques, and Steven Degraer. “The Harbour Porpoise Phocoena Phocoena in the Belgian Part of the North Sea: Trends in Abundance and Distribution”. Belgian Journal of Zoology 141, no. 2 (March 15, 2024): 75–84. Accessed October 10, 2024. https://belgianjournalofzoology.eu/BJZ/article/view/145.