@misc{indiciae64f97310a615,
  title = {Digitized spark chamber for space science experiments.},
  author = {Ehrmann, C. H. and Fichtel, C. E. and Kniffen, D. A. and Ross, R. W.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670047125},
  note = {Source identifier: 19670047125}
}