@article{HaenischHeuerMenzel2001,
  author    = {H{\"a}nisch, Christoph and Heuer, Axel and Menzel, Ralf},
  title     = {Threshold reduction of stimulated Brillouin scattering (SBS) using fiber loop schemes},
  year      = {2001},
  language  = {en}
}
@article{HeuerHaenischMenzel2003,
  author    = {Heuer, Axel and H{\"a}nisch, Christoph and Menzel, Ralf},
  title     = {Low-power phase conjugation based on stimulated Brillouin scattering in fiber amplifiers},
  year      = {2003},
  language  = {en}
}
@article{HeuerHaenischMenzel2003,
  author    = {Heuer, Axel and H{\"a}nisch, Christoph and Menzel, Ralf},
  title     = {New concept for low threshold optical phase conjugation via SBS in a fiber amplifier},
  isbn      = {0-8194-4772-2},
  year      = {2003},
  language  = {en}
}