Bartkowski, Karolina, Anita Lewandowska, Julia Gaffke, and Jarzy Bolalek. “The Contamination of Bottom Sediments in the Southern Baltic With Polycyclic Aromatic Hydrocarbons (PAHs)”. Ecocycles 2, no. 1 (March 22, 2016): 3-8. Accessed December 4, 2020. https://www.ecocycles.net/ojs/index.php/ecocycles/article/view/45.