Mehrez Zribi Nicolas Baghdadi Christine Guérin A New Semi-empirical Model for the Analysis of Surface Roughness Heterogeneity. 451-453 2006 IGARSS http://dx.doi.org/10.1109/IGARSS.2006.120 conf/igarss/2006 db/conf/igarss/igarss2006.html#ZribiBG06