@article{52,
  author = {Dana Anderson and Roger Brockett and N. Nuttall},
  title = {Information Dynamics of Photorefractive Two-Beam Coupling},
  year = {1999},
  journal = {Physical Review Letters},
  volume = {82},
  pages = {1418-1421},
  month = {1999-02},
  issn = {0031-9007},
  doi = {10.1103/PhysRevLett.82.1418},
}