@article{74,
  author = {A. Zozulya and Dana Anderson},
  title = {Propagation of an optical beam in a photorefractive medium in the presence of a photogalvanic nonlinearity or an externally applied electric field},
  year = {1995},
  journal = {Physical Review A},
  volume = {51},
  pages = {1520-1531},
  month = {1995-02},
  issn = {1050-2947},
  doi = {10.1103/PhysRevA.51.1520},
}