Świerk, Dariusz, et al. “Does the Genetic Variability of Phragmites Australis (Cav.) Trin. Ex Steud Determine the Spatial Distribution of the Species?”. Oceanological and Hydrobiological Studies, vol. 47, no. 4, Dec. 2018, pp. 405-14, https://czasopisma.bg.ug.edu.pl/index.php/oandhs/article/view/8597.