@misc{indiciaed3c02011dad8,
  title = {A gamma ray telescope utilizing large area wire spark chambers},
  author = {Ehrmann, C. H. and Fichtel, C. E. and Kniffen, D. A. and Oegelmann, H. B. and Ross, R. W.},
  year = {1968},
  url = {https://ntrs.nasa.gov/citations/19690008666},
  note = {Source identifier: 19690008666}
}