@misc{indiciaea5f8ea8c1c12,
  title = {All-solid-state radiometers for environmental studies to 700 GHz},
  author = {Zimmermann, Ralph and Zimmermann, Ruediger and Zimmermann, Peter},
  year = {1992},
  url = {https://ntrs.nasa.gov/citations/19930018595},
  note = {Source identifier: 19930018595}
}