1. UNESCO Chair on Aflaj Studies and Archaeo-Hydrology, University of Nizwa, Nizwa, Oman
2. Geography Research Unit, University of Oulu, Oulu, Finland
3. Centre for Research and Innovation in Tourism (CRiT), Taylor’s University, Subang Jaya, Malaysia
4. Water, Energy and Environmental Engineering Department, University of Oulu, Oulu, Finland