@article{Piontek:2012,
  author  = "M. Piontek and W. Czyżewska",
  title   = "Efficiency of drinking water treatment processes. Removal of phytoplankton with special consideration for cyanobacteria and improving physical and chemical parameters",
  journal = "Polish Journal of Environmental Studies",
  volume  = "Vol. 21",
  number  = "no 6",
  pages   = "1797--1805",
  year    = "2012",
}