@article{Drab:2001,
  author  = "M. Drab and H. Greinert",
  title   = "The pH changes of the soils formed as a result of reclamation of the sand-pits",
  journal = "Acta Agrophysica",
  volume  = "R. 51",
  pages   = "37--43",
  year    = "2001",
}