@misc{indiciaeb6bb5382647e,
  title = {Error enhancement in geomagnetic models derived from scalar data},
  author = {Stern, D. P. and Bredekamp, J. H.},
  year = {1975},
  url = {https://ntrs.nasa.gov/citations/19750047887},
  note = {Source identifier: 19750047887}
}