@misc{indiciae36aac4abde50,
  title = {Improved noise-adding radiometer for microwave receivers},
  author = {Batelaan, P. D. and Stelzried, C. T. and Goldstein, R. M.},
  year = {1973},
  url = {https://ntrs.nasa.gov/citations/19730000345},
  note = {Source identifier: 19730000345}
}