@misc{indiciae22aa8da7c203,
  title = {Map showing free-air gravity anomalies around the Canary Islands, Spain},
  author = {D. W. Folger and J.R. McCullough and B.J. Irwin and J. E. Dodd and W.J. Strahle and C. F. Polloni and R. M. Bouse},
  year = {1990},
  doi = {10.3133/mf2098b},
  url = {https://pubs.usgs.gov/publication/mf2098B},
  note = {Source identifier: mf2098B}
}