Authors
Ştefan Dan Pastramă
Faculty of Engineering and Management of Technological Systems/Department of Strength of Materials, University POLITEHNICA of Bucharest,, Bucharest, Romania
© 2018 Ştefan Dan Pastramă, published by Lucian Blaga University of Sibiu
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 License.