Open access peer-reviewed chapter
Submitted: 09 October 2014 Reviewed: 23 September 2015 Published: 11 May 2016
DOI: 10.5772/61604
From the Edited Volume
Edited by Wenping Cao and Yihua Hu
Submitted: 09 October 2014 Reviewed: 23 September 2015 Published: 11 May 2016
© 2016 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.