@misc{indiciaee76eecfe16a6,
  title = {The C3H2 2(20)-2(11) transition - Absorption in cold dark clouds},
  author = {Matthews, H. E. and Avery, L. W. and Madden, S. C. and Irvine, W. M.},
  year = {1986},
  url = {https://ntrs.nasa.gov/citations/19870027450},
  note = {Source identifier: 19870027450}
}