@misc{HartmannTaubertFriedrichetal.2002,
  author    = {Hartmann, J{\"u}rgen and Taubert, Dieter Richard and Friedrich, R. 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},
  address   = {Gaithersburg (USA)},
  year      = {2002},
  language  = {en}
}