Violante-Carvalho, Nelson, and Ian S. Robinson. 2004. “Comparison of the Two-Dimensional Directional Wave Spectra Retrieved from Spaceborne Synthetic Aperture Radar Images Using the MPI Scheme Against Directional Buoy Measurements”. Scientia Marina 68 (3):317-30. https://doi.org/10.3989/scimar.2004.68n3317.