@article{HeuermannSchiek2009,
  author    = {Holger Heuermann and Burkhard Schiek},
  title     = {A Generalization of the Txx Network Analyzer Self-Calibration Procedure},
  journal   = {Conference proceedings : monday 24th to thursday 27th august 1992, Helsinki University of Technology, Espoo, Finland ; [the international conference and exhibition designed for the Microwave Community]. Vol. 2},
  pages     = {907 -- 912},
  year      = {2009},
}