1. Institute for Research in Circular Economy and Environment Ernest Lupan, 400800 Cluj-Napoca, Romania
2. Faculty of Industrial Engineering, Robotics and Product Management, Technical University of Cluj-Napoca, 400641 Cluj-Napoca, Romania
3. Faculty of Engineering, Lucian Blaga University of Sibiu, 10 Victoriei Blv., 550024 Sibiu, Romania
4. Theoretical and Applied Science Department, Insubria University, 46 Via G.B. Vico, I-21100 Varese, Italy