Pach-Gurgul, Agnieszka, and Marta Ulbrych. “Energy Efficiency of the Polish Industrial Sector in the Context of the Concept of Sustainable Development”. Studies of the Industrial Geography Commission of the Polish Geographical Society 33, no. 4 (December 31, 2019): 95–113. Accessed October 7, 2024. https://prace-kgp.uken.krakow.pl/article/view/5737.