@misc{indiciae70b7b228b32d,
  title = {Limitations of determining density or magnetic boundaries from the horizontal gradient of gravity or pseudogravity data},
  author = {V. J. S. Grauch and L. Cordell},
  year = {1987},
  doi = {10.1190/1.1442236},
  url = {https://pubs.usgs.gov/publication/70014755},
  note = {Source identifier: 70014755}
}