@article{Walczak:2015,
  author  = "B. Walczak and J. Kostecki and R. Wasylewicz and T. Lassota and A. Greinert and M. Drab",
  title   = "The content of lead in soils of allotment gardens in Zielona Góra, Poland",
  journal = "Polish Journal of Soil Science",
  volume  = "Vol. 48",
  number  = "no. 1",
  pages   = "41--46",
  year    = "2015",
}