Witak, Małgorzata, and Jarosław Pedziński. 2018. “Diatom Record of Progressive Anthropopressure in the Gulf of Gdańsk and the Vistula Lagoon”. Oceanological and Hydrobiological Studies 47 (2):167-80. https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8621.