@article{PuesSchwungRytzetal.2021,
  author    = {Patrick Pues and Sebastian Schwung and Daniel Rytz and Thomas J{\"u}stel},
  title     = {On the use of luminescent single crystals as optical reference materials},
  journal   = {Journal of Luminescence},
  volume    = {238},
  pages     = {118289},
  doi       = {10.1016/j.jlumin.2021.118289},
  year      = {2021},
}