@article{KnoblochKatholyOrendietal.1996,
  author    = {Knobloch, Harald and Katholy, Stefan and Orendi, H. and Hesse, J. and Ruhmann, Ralf and Prescher, Dietrich and Brehmer, Ludwig},
  title     = {Ellipsometric studies on photochromic ultra thin polymer films},
  year      = {1996},
  language  = {en}
}
@article{WolffRuhmannThieleetal.1996,
  author    = {Wolff, Dietmar and Ruhmann, Ralf and Thiele, T. and Prescher, Dietrich and Springer, J.},
  title     = {Liquid-crystalline side group polymers with fluorine-containing azo-chromophores},
  year      = {1996},
  language  = {en}
}
@article{RuhmannThieleWolffetal.1996,
  author    = {Ruhmann, Ralf and Thiele, T. and Wolff, Dietmar and Prescher, Dietrich and Springer, J.},
  title     = {Liquid crystalline side group polymers with azo-chromophores and fluorinated tails of varying length},
  year      = {1996},
  language  = {en}
}