@misc{indiciae3c2011852fbe,
  title = {Microwave integrated circuit for Josephson voltage standards},
  author = {Holdeman, L. B. and Toots, J. and Chang, C. C.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810008828},
  note = {Source identifier: 19810008828}
}