@misc{indiciaeb0ce51890c7c,
  title = {Negative ion spectrometry for detecting nitrated explosives},
  author = {Boettger, H. G. and Yinon, J.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19740000276},
  note = {Source identifier: 19740000276}
}