Breakdown of waves described by exact solutions of the Thomas-Fermi model A. B. Shvartsburg, L. Stenflo and P. K. Shukla Eur. Phys. J. B, 28 1 (2002) 71-74 Published online: 09 July 2002 DOI: 10.1140/epjb/e2002-00201-3