@article{Sadecka:2013,
  author  = "Z. Sadecka and A. Jędrczak and E. Płuciennik-Koropczuk and S. Myszograj and M. Suchowska-Kisielewicz",
  title   = "COD fractions in sewage flowing into Polish sewage treatment plants",
  journal = "Chemical and Biochemical Engineering Quarterly",
  volume  = "Vol. 27",
  number  = "no. 2",
  pages   = "185--195",
  year    = "2013",
}