@misc{indiciae1a888787314c,
  title = {The U.S. Geological Survey's gravity program in California},
  author = {Howard W. Oliver},
  year = {2011},
  doi = {10.1029/eo050i010p00543},
  url = {https://pubs.usgs.gov/publication/70223907},
  note = {Source identifier: 70223907}
}