Faasse, Marco, et al. “First Record of the Rare Crab Asthenognathus Atlanticus Monod, 1933 (Crustacea: Brachyura: Varunidae) in the North Sea”. Oceanological and Hydrobiological Studies, vol. 50, no. 3, Sept. 2021, pp. 352-8, https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/6301.