Eur. Phys. J. Appl. Phys.
Volume 58, Number 1, April 2012
Article Number 11001
Number of page(s) 6
Section Instrumentation and Metrology
Published online 23 March 2012

© The author(s) 2012

Licence Creative Commons
This article is distributed under the terms of the Creative Commons Attribution Noncommercial License which permits any noncommercial use, distribution, and reproduction in any medium, provided the original author(s) and source are credited.