1. Department of Geodesy and Geoinformatics, Wroclaw University of Science and Technology, Wroclaw, Poland
2. Department of Integrated Geodesy and Cartography, AGH University of Krakow, Krakow, Poland
3. Department of Geodesy, University of Agriculture in Krakow, Krakow, Poland
4. Department of Civil and Environmental Engineering, Federal University of Paraba, João Pessoa, Brasil