Open access peer-reviewed chapter
By Yoshitake Masuda
Submitted: March 28th 2011Reviewed: August 12th 2011Published: December 22nd 2011
DOI: 10.5772/31183
Downloaded: 2494
© 2011 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.
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