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Michał Stawowiak
Silesian University of Technology Faculty of Mining and Geology Department of Mining Mechanization and Robotisation ul. Akademicka 2, 44-100Gliwice, POLAND
Mariusz Kuczaj
Silesian University of Technology Faculty of Mining and Geology Department of Mining Mechanization and Robotisation ul. Akademicka 2, 44-100Gliwice, POLAND