Authors
Piotr OWERKO
Assistant Prof.; PhD, Faculty of Materials, Civil and Environmental Engineering, University of Bielsko-Biala, Bielsko-Biala, Poland
Jerzy KAŁUŻA
MSc; Aspekt Laboratorium Sp. z o.o., Jaworzno, Poland
Marek WAZOWSKI
PhD; Aspekt Laboratorium Sp. z o.o., Jaworzno, Poland