@article{Wolniak:2020,
author
=
"R.Wolniak and S.Saniuk and S.Grabowska and B.Gajdzik",
title
=
"Identification of Energy Efficiency Trends in the Context of the Development of Industry 4.0 Using the Polish Steel Sector as an Example",
journal
=
"Energies",
volume
=
"Vol. 13",
number
=
"iss. 11",
pages
=
"1--16",
year
=
"2020",
}