Open access
Submitted: March 26th, 2011 Published: July 5th, 2012
DOI: 10.5772/31118
From the Edited Volume
Edited by Cheng-Xiang Wang and Joseph Mitola III
Submitted: March 26th, 2011 Published: July 5th, 2012
© 2012 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.