1. Department of Industrial System Engineering and Management, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania
2. Department of Engineering and Management, and Mechatronics, Faculty of Engineering, Vasile Alecsandri University of Bacau, Calea Marasesti 157, 600115 Bacau, Romania