@InCollection{Kempa:1989,
  author    = "E. Kempa and A. Jędrczak and M. Piontek and A. Solski",
  title     = "Toxicity of water extracts of hazardous waste",
  pages     = "297--305",
  year      = "1989",
  booktitle = "The future for water quality in Europe - WATERSHED 89 : Proceedings of the IAWPRC Conference",
  publisher = "Pergamon Press",
  address   = "Oxford",
}