E. Ropelewska, A. Bielecki, S. Czachorowski, M. Ropelewski, and J. Dziejowski, “Dina lineata (O.F. Müller, 1774) – an interesting species of leech in astatic reservoirs of the city of Olsztyn and its surroundings”, EQ, vol. 18, pp. 69 –, Apr. 2014.