Affiliation: | 1Faculty of Civil and Sanitary Engineering, Lublin Univ. of Technology, ul. Nadbystrzycka 40, 20-618 Lublin, Poland. E-mail: piotr_jaskowski@wp.pl 2Associate Professor, Faculty of Mining and Geoengineering, AGH Univ. of Science and Technology, ul. Mickiewicza 30, 30-059 Krakow, Poland. E-mail: wsobotka@poczta.onet.pl
|