@article{WilkeSchettlerViethHillebrandetal.2018,
  author    = {Franziska Daniela Helena Wilke and Georg Schettler and Andrea Vieth-Hillebrand and Michael K{\"u}hn and Heike Rothe},
  title     = {Activity concentrations of U-238 and Ra-226 in two European black shales and their experimentally-derived leachates},
  journal   = {Journal of Environmental Radioactivity},
  volume    = {190},
  pages     = {122 -- 129},
  doi       = {10.1016/j.jenvrad.2018.05.005},
  year      = {2018},
}