Closed shells at drip-line nuclei
  The shell structure of magic nuclei far from stability is discussed in terms of the self-consistent spherical Hartree-Fock-Bogoliubov theory. In particular, the sensitivity of the shell-gap sizes and the two-neutron separation energies to the choice of particle-hole and particle-particle components of the effective interaction is investigated. 
J. Dobaczewski, W. Nazarewicz, and T.R. Werner