ISOLTRAP: An on-line Penning trap for mass spectrometry on short-lived nuclides M. Mukherjee, D. Beck, K. Blaum, G. Bollen, J. Dilling, S. George, F. Herfurth, A. Herlert, A. Kellerbauer, H. -J. Kluge et al. (3 more) Eur. Phys. J. A, 35 1 (2008) 1-29 Published online: 27 February 2008 DOI: 10.1140/epja/i2007-10528-9