@misc{indiciae09f20337aaa9,
  title = {Soil moisture detection by Skylab's microwave sensors},
  author = {Ulaby, F. T. and Barr, J. and Sobti, A. and Moore, R. K.},
  year = {1974},
  url = {https://ntrs.nasa.gov/citations/19750049801},
  note = {Source identifier: 19750049801}
}