Open access
Submitted: May 23rd, 2011 Published: March 23rd, 2012
DOI: 10.5772/36491
From the Edited Volume
Edited by Huei-Tse Hou
Submitted: May 23rd, 2011 Published: March 23rd, 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.