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  author    = {Jansen, T. and L.M. Funke, and Gorobez, J. and B{\"o}hnisch, D. and R.-D. Hoffmann, and L. Heletta, and R. P{\"o}ttgen, and Hansen, M. R. and J{\"u}stel, T. and Eckert, H.},
  title     = {Optical Properties and Solid State NMR Spectroscopy},
  series = {Dalton Trans},
  volume    = {48 (2019)},
  journal   = {Dalton Trans},
  pages     = {5361},
  year      = {2019},
  language  = {de}
}
@article{RPoettgenEckertJohrendtetal.2018,
  author    = {R. P{\"o}ttgen, and Eckert, H. and Johrendt, D. and Stahl, J. and B{\"o}hnisch, D. and J{\"u}stel, T. and Jansen, T. and Benndorf, C. and L. Heletta, and Seidel, S. and L. Funke, and R.-D. Hoffmann,},
  title     = {Na3GaF6 - A Crystal Chemical and Solid State NMR Spectroscopic Study},
  series = {Z. Kristallographie},
  volume    = {233},
  journal   = {Z. Kristallographie},
  doi       = {10.1515/zkri-2017-2138},
  pages     = {479 -- 487},
  year      = {2018},
  language  = {en}
}
@article{DierkesSeidelBenndorfetal.2017,
  author    = {Dierkes, T. and Seidel, S. and Benndorf, C. and Heletta, L. and de Oliveira Jr., M. and Holtkamp, M. and Karst, U. and Block, T. and J{\"u}stel, T. and Eckert, H. and Poettgen, R.},
  title     = {Mixed Europium Valence in Eu0.937Ba8[BN2]6 - Structure and Spectroscopic Behavior},
  series = {Solid State Science},
  volume    = {70},
  journal   = {Solid State Science},
  doi       = {10.1016/j.solidstatesciences.2017.06.002},
  pages     = {86 -- 92},
  year      = {2017},
  language  = {en}
}