1. Institute of Archaeology , University of Rzeszow , Rzeszów , Poland
2. Polish Geological Institute – National Research Institute, Holy Cross Branch of Jan Czarnocki in Kielce , Kielce , Poland
3. Silesian University of Technology , Institute of Physics – CSE, Division of Geochronology and Environmental Isotopes , Gliwice , Poland
4. Polish Geological Institute – National Research Institute, Carpathian Branch , Kraków , Poland