@misc{JuestelPuesSchwungetal.2018,
  author    = {J{\"u}stel, Thomas and Pues, Patrick and Schwung, S. and Rytz, Daniel},
  title     = {Reference Standards Based on Single Crystals for Optical Spectroscopy, 7th Workshop on NLO Laser Crystals and Oxides, Idar-Oberstein, September 2018},
  year      = {2018},
  language  = {en}
}
@misc{SchwungPuesGrossetal.2017,
  author    = {Schwung, S. and Pues, P. and Groß, A. and Enseling, D. and J{\"u}stel, T. and Rytz, S.},
  title     = {Energy transfer mechanisms in Eu3+ and Tb3+ doped KY(WO4)2, DGGK, Bordeaux, France, September 2017},
  year      = {2017},
  language  = {en}
}