1. Polish Geological Institute - NRI; Rakowiecka 4 Warszawa 00-975 Poland
2. Department of Geomorphology and Palaeogeography; Ivan Franko National University of Lviv; Lviv, P. Doroshenko 41 79000 Ukraine
3. Department of Geoecology and Palaeogeography; Maria Curie-Skłodowska University; Al. Kraśnicka 2 cd Lublin 20-718 Poland
4. Departament of Magnetism; Institute of Geophysics; Polish Academy of Sciences; Księcia Janusza 64 Warszawa 01-452 Poland