1 | Department for Management of Science and Technology Development, Ton Duc Thang University,
Ho Chi Minh City, Vietnam |
2 | Faculty of Environment and Labour Safety, Ton Duc Thang University, Ho Chi Minh City, Vietnam |
3 | University of Priština-Kosovska Mitrovica, Faculty of Sciences, Department of Mathematics,
Ive Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia |
4 | University of Belgrade, Faculty of Geography, Studenstskitrg 3/III, 11000 Belgrade, Serbia |
5 | University of Priština-Kosovska Mitrovica, Faculty of Sciences, Department of Geography,
Ive Lole Ribara 29, 38220 Kosovska Mitrovica, Serbia |