@misc{indiciae7b8402c28511,
  title = {Interferometric studies of interstellar calcium lines.},
  author = {Marschall, L. A. and Hobbs, L. M.},
  year = {1972},
  url = {https://ntrs.nasa.gov/citations/19720040997},
  note = {Source identifier: 19720040997}
}