1. Institute of the Built Environment and Spatial Policy, Faculty of Geographical Sciences, University of Lodz , Łódź , Poland
2. Department of Security Studies, Polish Air Force University , Dęblin , Poland
3. Department of Geography , Tourism and Territorial Planning , University of Oradea , Oradea , Romania
4. Department of Economic and Social Geography , Demography and Territorial Development , Comenius University , Bratislava , Slovakia
5. Department of Social Geography and Regional Development Planning , University of Debrecen , Hungary
6. Institute of Mathematics, Lodz University of Technology , Łódź , Poland