@article{ISI:000168095300140,
  title = {Reply to ``Comment on `Phenomenological damping in optical response tensors'{''}},
  journal = {PHYSICAL REVIEW A},
  abstract = {We show that damping factors must not be incorporated in the perturbation of the ground state by a static electric field. If they are included, as in the theory of Stedman et al. {[}preceding Comment. Phys. Rev. A 63, 047801 (2001)], then there would be an electric dipole in the y direction induced in a hydrogen atom in the M-s = + 1/2 state by a static electric field in the x direction. Such a dipole is excluded by symmetry.},
  volume = {63},
  number = {4},
  year = {2001},
  author = {Buckingham, AD and Fischer, Peer},
  doi = {10.1103/PhysRevA.63.047802}
}