The shell closure in neutron-deficient Pb isotopes M. Bender, T. Cornelius, G.A. Lalazissis, J.A. Maruhn, W. Nazarewicz and P.-G. Reinhard Eur. Phys. J. A, 14 1 (2002) 23-28 Published online: 15 May 2002 DOI: 10.1140/epja/iepja1320