Issue
EPL
Volume 97, Number 4, February 2012
Article Number 44009
Number of page(s) 6
Section Electromagnetism, Optics, Acoustics, Heat Transfer, Classical Mechanics, and Fluid Dynamics
DOI http://dx.doi.org/10.1209/0295-5075/97/44009
Published online 20 February 2012

© EPLA, 2012