1. Department of Geotechnical Engineering, Faculty of Civil Engineering and Architecture , Lublin University of Technology , Nadbystrzycka St. 40, 20-618 , Lublin , Poland
2. Department of Integrated Geodesy and Cartography, Faculty of Mining Surveying and Environmental Engineering , AGH University of Science and Technology , Mickiewicza Av. 30, 30-059 , Kraków , Poland