@inproceedings{JansenJuestel2014,
  author    = {T. Jansen and T. J{\"u}stel},
  title     = {On the Temperature-Dependent External Photoluminescence Quantum Yield of Mg14Ge5O24:Mn4+ by Employing an Integrating Sphere},
  booktitle = {Int. Conf. on Luminescence, Wroclaw, Poland},
  year      = {2014},
}