1. Department of Malacology; Institute of Zoology; Jagiellonian University; Kraków Poland
2. Department of Biology; Biotechnical Faculty; University of Ljubljana; Ljubljana Slovenia
3. Department of Animal Anatomy; Institute of Veterinary Science; University of Agriculture in Krakow; Kraków Poland
4. Department of Comparative Anatomy; Institute of Zoology; Jagiellonian University; Kraków Poland
5. Nature Conservation Agency of the Czech Republic; Regional Office Kokořínsko - Máchův kraj Protected Landscape Area Administration; Mělník Czech Republic