1. Faculty of Geodesy, Institute of Geodesy, Geospatial and Civil Engineering, University of Warmia and Mazury in Olsztyn, Oczapowski 1 Street, 10-719 Olsztyn, Poland
2. Faculty of Geodesy, Department of Geotechnics and Road Construction, Geospatial and Civil Engineering, University of Warmia and Mazury in Olsztyn, Heweliusza 4 Street, Room 3.23, 10-724 Olsztyn, Poland