1. Leibniz Universität Hannover Institute of Radioecology and Radiation Protection Herrenhäuser Str. 2 30419 Hannover Germany
2. VKTA-Strahlenschutz Analytik & Entsorgung Rossendorf e.V. Germany
3. Environmental Radioactivity Lab Institute of Nuclear and Radiological Sciences & Technology, Energy & Safety, NCSR “Demokritos” Athens Greece
4. Radioactivity Measurements Laboratory Institute of Environmental Physics University of Bremen Bremen Germany
5. Snakedance Scientific, LLC Albuquerque, NM USA
6. Direction de l'Environnement Institut de Radioprotection et de Sûreté Nucléaire St Paul lez Durance France
7. Institute of Nuclear Physics Polish Academy of Sciences 31-342 Krakow Poland
8. Leibniz Universität Hannover Institute of Inorganic Chemistry Hannover Germany