@misc{indiciae8f65abae25cb,
  title = {High-frequency resonant-tunneling oscillators},
  author = {Brown, E. R. and Parker, C. D. and Calawa, A. R. and Manfra, M. J. and Chen, C. L.},
  year = {1991},
  url = {https://ntrs.nasa.gov/citations/19910041384},
  note = {Source identifier: 19910041384}
}