Issue
Eur. Phys. J. B
Volume 17, Number 4, October II 2000
Page(s) 723 - 729
Section Interdisciplinary Physics
DOI http://dx.doi.org/10.1007/s100510070114
Published online 15 October 2000

© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2000