@article{HartmannFriedrichTaubertetal.2003,
  author    = {Hartmann, J{\"u}rgen and Friedrich, R. and Taubert, Dieter Richard and Hollandt, J{\"o}rg},
  title     = {Improved calibration of the spectral responsivity of interference filter radiometers in the visible and near infrared spectral range at PTB},
  journal   = {Metrologia},
  number    = {40},
  institution = {Fakult{\"a}t Elektrotechnik},
  pages     = {35 -- 38},
  year      = {2003},
  language  = {en}
}