@misc{indiciae1c786a8a2232,
  title = {Hall effect magnetometer},
  author = {Woollam, J. A. and Beale, H. A. and Spain, I. L.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750005141},
  note = {Source identifier: 19750005141}
}