Robionek, Alicja E., Krzysztof Banaś, Rafał Chmara, and Józef Szmeja. “Periodic Events of Potamogeton Alpinus in NW Poland (Pomerania Region)”. Oceanological and Hydrobiological Studies 47, no. 1 (March 26, 2018): 41–49. Accessed July 22, 2024. https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8633.