Open access
Submitted: 16 April 2012
DOI: 10.5772/50298
From the Edited Volume
Edited by Adem Karahoca
Submitted: 16 April 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.