Recent high-precision mass measurements with the Penning trap spectrometer ISOLTRAP F. Herfurth, G. Audi, D. Beck, K. Blaum, G. Bollen, P. Delahaye, S. George, C. Guénaut, A. Herlert, A. Kellerbauer et al. (8 more) Eur. Phys. J. A, 25 3 (2005) 17-21 Published online: 25 April 2005 DOI: 10.1140/epjad/i2005-06-031-3