On the Origin of Nuclear Superfluidity
  The induced pairing interaction arising from the exchange of collective surface vibrations among nucleons moving in time reversal states close to the Fermi energy is found to lead to values of the pairing gap which are similar to those experimentally observed. 
F. Barranco, R.A. Broglia, G. Gori, E. Vigezzi, P.F. Bortignon,   J.Terasaki