@manual{Greinert:2019,
author
=
"A.Greinert and J.Kostecki and M.Mrówczyńska and W.Szefner",
title
=
"Paliwa stałe - logo, Patent #:RCD 007403878",
note
=
"Date of application: 15-12-2019",
year
=
"2019",
}