1. Department of Geodesy, Faculty of Environmental Engineering and Land Surveying, University of Agriculture in Krakow, Balicka 253a, 30-149 Krakow, Poland
2. Department of Surveying, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Radlinského 11, 810-05 Bratislava, Slovakia
3. Department of Theoretical Geodesy and Geoinformatics, Faculty of Civil Engineering, Slovak University of Technology in Bratislava, Radlinského 11, 810-05 Bratislava, Slovakia