Open access
Submitted: 23 February 2012 Published: 16 January 2013
DOI: 10.5772/54177
From the Edited Volume
Edited by Kenji Suzuki
Submitted: 23 February 2012 Published: 16 January 2013
© 2013 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.