@article{YangJaiserNeheretal.2004,
  author    = {Xiao Hui Yang and Frank Jaiser and Dieter Neher and PaDreyia V. Lawson and Jean-Luc Br{\´e}das and Egbert Zojer and Roland G{\"u}ntner and Patricia Scanduicci de Freitas and Michael Forster and Ullrich Scherf},
  title     = {Suppression of the keto-emission in polyfluorene light-emitting diodes : Experiments and models},
  year      = {2004},
}