1. Faculty of Geography and Geoecology, St. Petersburg State University, V.O., 10-Line, 33, 199178, St. Petersburg, Russia
2. I. Kant State University of Russia, A. Nevsky str., 14 b, 236038, Kaliningrad, Russia
3. Faculty of Geography of Herzen State Pedagogical University, Moyka, 48, 191186, St. Petersburg, Russia
4. Scientific Research Center “Prebaltic Archaeology”, Emelyanova str., 53 - 6, 236034, Kaliningrad, Russia
5. School of Historical Studies, Newcastle University, Newcastle upon Tyne, NEI 7RU, UK
6. All-Russian Research Institute of Peat Industry, Marsovo Pole, 5, 196105, St. Petersburg, Russia