1. Department of Engineering and Technology Management, Faculty of Engineering, Northern University Centre of Baia Mare, Technical University of Cluj-Napoca, 62A, Victor Babes Street, 430083 Baia Mare, Romania
2. Industrial Engineering and Management Department, Faculty of Engineering, “Lucian Blaga” University of Sibiu, 10 Victoriei Street, 550024 Sibiu, Romania
3. Institute of Technical and Agricultural Sciences, University of Nyíregyháza, 31/b, Sóstói Street, 4400 Nyíregyháza, Hungary