@misc{HartmannFischerSeidel1999,
  author    = {Hartmann, J{\"u}rgen and Fischer, J. and Seidel, J.},
  title     = {Improved accuracy in measurement of radiometric apertures with a non-contact technique},
  address   = {Madrid (Spanien)},
  year      = {1999},
  language  = {en}
}