@misc{indiciae49217a2aeb1e,
  title = {An ionization gradient across the front in M17 SW},
  author = {Lester, D. F. and Dinerstein, H. L. and Rank, D. M. and Wooden, D. H.},
  year = {1983},
  url = {https://ntrs.nasa.gov/citations/19840033427},
  note = {Source identifier: 19840033427}
}