Smoothed Wigner functions: a tool to resolve semiclassical structures A. M.F. Rivas, E. G. Vergini and D. A. Wisniacki Eur. Phys. J. D, 32 3 (2005) 355-359 Published online: 21 December 2004 DOI: 10.1140/epjd/e2004-00189-8