@misc{indiciae5096990b1c01,
  title = {A high-density remote reference magnetic variation profile in the Pacific northwest of North America},
  author = {J.F. Hermance and S. Lusi and W. Slocum and G.A. Neumann and A.W. Green},
  year = {1989},
  doi = {10.1016/0031-9201(89)90016-2},
  url = {https://pubs.usgs.gov/publication/70015543},
  note = {Source identifier: 70015543}
}