@article{KuehlingGzikSchneideretal.2003,
  author    = {K{\"u}hling, Matthias and Gzik, Axel and Schneider, Ingo and Tschochner, Bernd},
  title     = {Heavy metal contamination of soils in a mining area in South Africa and its impact on some biotic systems},
  year      = {2003},
  language  = {en}
}
@article{KuehlingBukowskyKraudelt2001,
  author    = {K{\"u}hling, Matthias and Bukowsky, Heinz and Kraudelt, Heide},
  title     = {Heavy metal contents of chicken and red toads},
  year      = {2001},
  language  = {en}
}
@article{Kuehling2001,
  author    = {K{\"u}hling, Matthias},
  title     = {A selection of taxonomic indicator groups for ecological evaluation},
  year      = {2001},
  language  = {en}
}