1. Vyshtynets Museum of Nature and History; Kaliningrad Oblast Russia
2. Kant Baltic Federal University; Kaliningrad Russia
3. Research Laboratory for Quaternary Geochronology; Institute of Geology; Tallinn University of Technology; Tallinn Estonia
4. Marine Science and Technology Center; Department of Geophysical Sciences, Klaipėda University; Klaipėda Lithuania
5. Province of Drenthe; Assen the Netherlands
6. Utrecht University; Utrecht the Netherlands