Open access
Submitted: March 2nd, 2011 Published: March 14th, 2012
DOI: 10.5772/28760
From the Edited Volume
Edited by Elvis Pontes, Anderson Silva, Adilson Guelfi and Sergio Takeo Kofuji
Submitted: March 2nd, 2011 Published: March 14th, 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.