Directional wave spectra by inversion of ERS-1 synthetic aperture radar ocean imagery

@article{Engen1994DirectionalWS,
  title={Directional wave spectra by inversion of ERS-1 synthetic aperture radar ocean imagery},
  author={Geir Engen and Harald Johnsen and Harald E. Krogstad and Stephen F. Barstow},
  journal={IEEE Trans. Geoscience and Remote Sensing},
  year={1994},
  volume={32},
  pages={340-352}
}