@article{StumpeSakhnoGritsaietal.2014,
  author    = {Joachim Stumpe and O. Sakhno and Y. Gritsai and R. Rosenhauer and Th. Fischer and Michael Rutloh and F. Schaal and S. Weidenfeld and M. Jetter and P. Michler and C. Pruss and W. Osten},
  title     = {Active and passive LC based polarization elements},
  journal   = {Molecular crystals and liquid crystals},
  volume    = {594},
  number    = {1},
  pages     = {140 -- 149},
  doi       = {10.1080/15421406.2014.917503},
  year      = {2014},
}