Dembek, Małgorzata, et al. “Changes in the Composition and Abundance of Ichthyoplankton Along Environmental Gradients of the Southern Baltic Sea”. Oceanological and Hydrobiological Studies, vol. 48, no. 4, Dec. 2019, pp. 328-36, https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/7964.