1. Department of Industrial Design and Production Engineering, University of West Attica, 12244 Athens, Greece
2. Department of Mechanisms and Robots Theory, National University of Science and Technology Polytechnic Bucharest, 060042 Bucharest, Romania
3. Centre for Advanced Material Manufacturing and Design, University of Auckland, Auckland 1023, New Zealand
4. Institute of Solid Mechanics, Romanian Academy, 030167 București, Romania