@misc{indiciaecf225edaaa26,
  title = {Ferromagnetic core valve gives rapid action on minimum energy},
  author = {Larson, A. V. and Tinkham, J. P.},
  year = {1967},
  url = {https://ntrs.nasa.gov/citations/19670000622},
  note = {Source identifier: 19670000622}
}