Ropelewska, Ewa, et al. “Dina Lineata (O.F. Müller, 1774) – an Interesting Species of Leech in Astatic Reservoirs of the City of Olsztyn and Its Surroundings”. Ecological Questions, vol. 18, Apr. 2014, pp. 69 – 72, doi:10.12775/ecoq-2013-0008.