@misc{indiciae6f3c0c1d964d,
  title = {Mapping small elevation changes over large areas - Differential radar interferometry},
  author = {Gabriel, Andrew K. and Goldstein, Richard M. and Zebker, Howard A.},
  year = {1989},
  url = {https://ntrs.nasa.gov/citations/19890059906},
  note = {Source identifier: 19890059906}
}