Retrieval of Savanna Vegetation Canopy Height from ICESat-GLAS Spaceborne LiDAR With Terrain Correction. - Ehsan Khalefa; Izak P. J. Smit; Alecia Nickless; Sally Archibald; Alexis J. Comber; Heiko Balzter (IEEE Geosci. Remote. Sens. Lett., 2013)