@misc{indiciaeb427939befbd,
  title = {Low intensity H-beta emission from the interstellar medium},
  author = {Reynolds, R. J. and Roesler, F. and Scherb, F. and Boldt, E. A.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19720004123},
  note = {Source identifier: 19720004123}
}