@misc{indiciae418e6b3b2a4d,
  title = {Global digital topography mapping using a scanning radar altimeter},
  author = {Elachi, C. and Im, K. E. and Li, F. and Rodriguez, E.},
  year = {1987},
  url = {https://ntrs.nasa.gov/citations/19870065953},
  note = {Source identifier: 19870065953}
}