1. Department of Civil Engineering, Institute of Technology and Business in České Budějovice, Okružní 517/10, 370 01 Ceske Budejovice, Czech Republic
2. Department of Landscape Management, Faculty of Forestry and Wood Technology, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic
3. Department of Statistics and Operation Analysis, Faculty of Business and Economics, Mendel University in Brno, Zemědělská 3, 613 00 Brno, Czech Republic