1. Centre for Nuclear Technologies; Technical University of Denmark, DTU-Nutech, DTU Risø Campus; DK-4000 Roskilde Denmark
2. Nordic Laboratory for Luminescence Dating; Department of Geoscience; Aarhus University, DTU Risø Campus; DK-4000 Roskilde Denmark
3. Department of Geological Sciences; University of Canterbury; New Zealand
4. School of Earth Sciences; The University of Melbourne; Victoria 3010 Australia