@article{Heuermann2009,
  author    = {Holger Heuermann},
  title     = {Calibration procedures with series impedances and unknown lines simplify on-wafer measurements},
  journal   = {IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 47 (1999), H. 1},
  pages     = {1 -- 5},
  year      = {2009},
}