@misc{indiciaebef8544d6d68,
  title = {A cold molecular beam for gas-surface studies},
  author = {Ballard, R. and Cabrera, N. and Zapata, R. N.},
  year = {1969},
  url = {https://ntrs.nasa.gov/citations/19700042139},
  note = {Source identifier: 19700042139}
}