@article{HeuermannSchiek1997,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {Results of network analyzer measurements with leakage errors-corrected with direct calibration techniques},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  isbn      = {0018-9456},
  pages     = {1120 -- 1127},
  year      = {1997},
  language  = {en}
}
@article{HeuermannSchiek1997,
  author    = {Heuermann, Holger and Schiek, B.},
  title     = {15-term self-calibration methods for the error-correction of on-wafer measurements},
  series = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  journal   = {IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5},
  isbn      = {0018-9456},
  pages     = {1105 -- 1110},
  year      = {1997},
  language  = {en}
}