IEEE Geoscience and Remote Sensing Letters
IEEE Geoscience and Remote Sensing Letters > 2009 > 6 > 4 > 767 - 771
IEEE Geoscience and Remote Sensing Letters > 2012 > 9 > 4 > 644 - 648
IEEE Geoscience and Remote Sensing Letters > 2014 > 11 > 11 > 1881 - 1885