@misc{indiciaebb0817034157,
  title = {Liquid-filled proportional counter},
  author = {Alvarez, L. W. and Derenzo, S. E. and Muller, R. A. and Smadja, G. and Smith, D. B. and Smits, R. G. and Zaklad, H.},
  year = {1971},
  url = {https://ntrs.nasa.gov/citations/19710057481},
  note = {Source identifier: 19710057481}
}