Open access
Submitted: June 8th, 2011 Published: April 11th, 2012
DOI: 10.5772/37809
From the Edited Volume
Edited by Alessio Innocenti and Norlida Kamarulzaman
Submitted: June 8th, 2011 Published: April 11th, 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.