@article{Krupińska:2017,
  author  = "I. Krupińska",
  title   = "The impact of potassium manganate (VII) on the effectiveness of coagulation in the removal of iron and manganese from groundwater with an increased content of organic substances",
  journal = "Civil and Environmental Engineering Reports",
  volume  = "No. 27 (4)",
  pages   = "29--41",
  year    = "2017",
  note    = "University of Zielona Góra Press, Zielona Góra",
}