@misc{indiciae4c9c3f6003f5,
  title = {Technology - The path to the next 50 years},
  author = {Williams, D. P. and Sadin, S. R.},
  year = {1981},
  url = {https://ntrs.nasa.gov/citations/19810034036},
  note = {Source identifier: 19810034036}
}