1. Technical University of Cluj-Napoca, Northern Un iversity Cent re of Baia Mare, Faculty of Engineering – Department of Engineering and Technology Management , 62A, Vict or Babes Street, 430083, Baia Mare, Maramures, Romania
2. Częstochowa University of Technology, Department of Physics , Armii Krajowej 19 Av., 42-200 Częstochowa
3. Electro Sistem, 4B, 8 Martie Street, 430406, Baia Mare, Maramures, Romania
4. ”Lucian Blaga” University of Sibiu, Faculty of Engineering, Industrial Engineering and Management Department , 10 Victoriei Street, 550024, Sibiu, Romania