@manual{Greinert:2018,
author
=
"A.Greinert and W.Szefner and A.Olkowicz and R.Grech",
title
=
"Układ przetwarzania osadu ściekowego, Patent #:P.427561",
note
=
"Date of application: 27-10-2018",
year
=
"2018",
}