@misc{indiciaeaa31d2d005a6,
  title = {Advanced instrumentation for QELS experiments},
  author = {Tscharnuter, Walther and Weiner, Bruce and Thomas, John},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19900007777},
  note = {Source identifier: 19900007777}
}