@misc{indiciae37a1c015e678,
  title = {Initial geomagnetic field model from Magsat vector data},
  author = {Langel, R. A. and Mead, G. D. and Lancaster, E. R. and Estes, R. H. and Fabiano, E. B.},
  year = {1980},
  url = {https://ntrs.nasa.gov/citations/19810025884},
  note = {Source identifier: 19810025884}
}