Spectral shape of the 21 decay from 2s state in He-like tin A. Kumar, S. Trotsenko, A. V. Volotka, D. Banaś, H. F. Beyer, H. Bräuning, A. Gumberidze, S. Hagmann, S. Hess, C. Kozhuharov et al. (5 more) Eur. Phys. J. Special Topics, 169 (2009) 19-22 Published online: 17 March 2009 DOI: 10.1140/epjst/e2009-00967-x