Authors
Agnieszka Makara
Cracow University of Technology, Faculty of Chemical Engineering and Technology, Cracow, Poland
Zygmunt Kowalski
Mineral and Energy Economy Research Institute Polish Academy of Sciences, Cracow, Poland
Piotr Radomski
Cracow University of Technology, Faculty of Chemical Engineering and Technology, Cracow, Poland
Piotr Olczak
Mineral and Energy Economy Research Institute Polish Academy of Sciences, Cracow, Poland