The first quadrupole excitations in spherical nuclei and nuclear pairing S.V. Tolokonnikov, S. Kamerdzhiev, S. Krewald, E. E. Saperstein and D. Voitenkov EPJ Web of Conferences, 38 (2012) 04002 Published online: 10 December 2012 DOI: 10.1051/epjconf/20123804002