1. Faculty of Mining, Ecology, Process Control and Geotechnology, Technical University of Košice, Park Komenského 14, 042 00 Košice, Slovakia
2. Faculty of Manufacturing Technologies, Technical University of Košice with a Seat in Prešov, Bayerova 1, 080 01 Prešov, Slovakia
3. Faculty of Logistics and Crisis Management, Tomas Bata University in Zlín, Studentské Nám. 1532, 686 01 Uherské Hradiště, Czech Republic