1. Samson Afewerki, Norwegian University of Science and Technology, Department of Geography, NO-7491 Trondheim, Norway
2. Asbjørn Karlsen, Norwegian University of Science and Technology, Department of Geography, NO-7491, Trondheim, Norway
3. Danny MacKinnon, Centre for Urban and Regional Development Studies (CURDS), School of Geography, Sociology & Politics, Newcastle University, Newcastle upon Tyne, NE1 7RU, UK