@misc{indiciae9b5e322354d5,
  title = {Crustal deformation observatory: Part B, precision geodesy},
  author = {Arthur G. Sylvester},
  year = {1981},
  doi = {10.3133/ofr81230},
  url = {https://pubs.usgs.gov/publication/ofr81230},
  note = {Source identifier: ofr81230}
}