@misc{indiciaea73df10a1e33,
  title = {An upper limit on the OH abundance in the intercloud medium.},
  author = {Knapp, G. R. and Kerr, F. J.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19730025512},
  note = {Source identifier: 19730025512}
}