About the Authors

Lucian Roșca

Affiliation Faculty of Engineering, University “Lucian Blaga” of Sibiu, Sibiu, Romania

Mihai Duguleană

mihai.duguleana@unitbv.ro

Affiliation Department of Product Design and Robotics, University Transilvania of Brasov, Braşov, Romania

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: LR MD. Performed the experiments: LR MD. Analyzed the data: LR MD. Contributed reagents/materials/analysis tools: LR MD. Wrote the paper: LR MD.