@misc{indiciae1f7106d8498d,
  title = {Planar varactor frequency multiplier devices with blocking barrier},
  author = {Lieneweg, Udo and Frerking, Margaret A. and Maserjian, Joseph},
  year = {1994},
  url = {https://ntrs.nasa.gov/citations/19940019348},
  note = {Source identifier: 19940019348}
}