Open Access
Article Number 02005
Number of page(s) 15
Section Contribution Full-Papers
Published online 24 October 2012

© Owned by the authors, published by EDP Sciences, 2012

Licence Creative Commons
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.