Frontiers and challenges of nuclear shell model T. Otsuka, Y. Utsuno, R. Fujimoto, B.A. Brown, M. Honma and T. Mizusaki Eur. Phys. J. A, 15 1-2 (2002) 151-155 Published online: 31 October 2002 DOI: 10.1140/epja/i2001-10244-6