1. Faculty of Geodesy and Cartography, Warsaw University of Technology, Plac Politechniki 1, 00-661 Warszawa, Poland
2. Faculty of Technical Sciences, DSW University of Lower Silesia, Wagonowa St. 9, 53-609 Wrocław, Poland
3. Faculty of Geoengineering, Mining and Geology, Wrocław University of Science and Technology, Wyb. Wyspiańskiego 27, 50-370 Wrocław, Poland