Towards direct mass measurements of nobelium at SHIPTRAP M. Block, D. Ackermann, K. Blaum, A. Chaudhuri, Z. Di, S. Eliseev, R. Ferrer, D. Habs, F. Herfurth, F. P. Heßberger et al. (18 more) Eur. Phys. J. D, 45 1 (2007) 39-45 Published online: 13 June 2007 DOI: 10.1140/epjd/e2007-00189-2