Open access peer-reviewed chapter
Reviewed: 19 October 2016 Published: 05 April 2017
DOI: 10.5772/66409
From the Edited Volume
Edited by Dan Simionescu and Agneta Simionescu
Reviewed: 19 October 2016 Published: 05 April 2017
© 2017 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution 3.0 License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.