@article{BimonteHaakhHenkeletal.2010,
  author    = {Giuseppe Bimonte and Harald Richard Haakh and Carsten Henkel and Francesco Intravaia},
  title     = {Optical BCS conductivity at imaginary frequencies and dispersion energies of superconductors},
  doi       = {10.1088/1751-8113/43/14/145304},
  url       = {http://iopscience.iop.org/1751-8121/},
  year      = {2010},
}