@misc{indiciaeff5d63c7701a,
  title = {Extended ecosystem signatures with application to Eos synergism requirements},
  author = {Ulaby, Fawwaz T. and Dobson, M. Craig and Sarabandi, Kamal},
  year = {1993},
  url = {https://ntrs.nasa.gov/citations/19940006902},
  note = {Source identifier: 19940006902}
}