@misc{indiciae2f31c05a8c60,
  title = {Three and four coil systems for homogeneous magnetic fields},
  author = {Pittman, M. E. and Waidelich, D. L.},
  year = {1965},
  url = {https://ntrs.nasa.gov/citations/19660028696},
  note = {Source identifier: 19660028696}
}