[1] Newcastle Univ, Sch Geog Polit & Sociol, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England
[2] Queen Mary Univ London, Dept Geog, London E1 4NS, England
[3] Comenius Univ, Dept Human Geog & Demogeog, Bratislava, Slovakia
[4] Polish Acad Sci, Inst Geog & Spatial Org, PL-00818 Warsaw, Poland