@InCollection{Kozioł:2020,
author
=
"M.Kozioł and J.Kozioł",
title
=
"Circular Economy - Challenges for Mining and Power Generation as Exemplified by Poland",
pages
=
"56--68",
year
=
"2020",
booktitle
=
"New trends in production Engineering ISBN: 9788366675001",
publisher
=
"De Gruyter Poland - Sciendo",
address
=
"Warszawa",
}