ŠTEFFEK, Jozef et al. "Hauffenia" Pollonera, 1898 (Caenogastropoda: Hydrobiidae) in Slovakia: A preliminary report. In Folia Malacologica. ISSN 1506-7629, 2011, vol. 19, no. 1, p. 1-7. PB 2443/P01/2006/31.