@misc{indiciaecc32cf33c1f0,
  title = {Solid state photomultiplier for astronomy, phase 2},
  author = {Besser, P. J. and Hays, K. M. and Laviolette, R. A.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890016833},
  note = {Source identifier: 19890016833}
}