@article{łukowski_2017, 
  title={FRACTIONATION OF HEAVY METALS (Pb, Cr AND Cd) IN MUNICIPAL SEWAGE SLUGES FROM PODLASIE PROVINCE}, 
  volume={18}, 
  DOI={10.12911/22998993/66244}, 
  publisher={Wydawnictwo Naukowe Gabriel Borowski (WNGB)}, 
  author={Łukowski}, 
  year={2017}, 
  month={Jan}
  }