Open access
Submitted: March 16th, 2011 Published: February 17th, 2012
DOI: 10.5772/30237
From the Edited Volume
Edited by Elvis Pontes, Anderson Silva, Adilson Guelfi and Sergio Takeo Kofuji
Submitted: March 16th, 2011 Published: February 17th, 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.