@misc{indiciae0528a281541b,
  title = {A magnetic core 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/19670020661},
  note = {Source identifier: 19670020661}
}