1. Airbus Intelligence 2014 Pléiades Satellite Imagery, Pléiades Products http://www.intelligence-airbusds.com/files/pmedia/public/r61_9_geo_011_pleiades_en_low.pdf
2. Astrium - European Aeronautic Defence and Space (EADS) 2012 SPOT 6/7 technical sheet http://www.intelligence-airbusds.com/files/pmedia/public/r12317_9_spot6-7_technical_sheet.pdf
3. Leaf colour and vine size are related to yield in a phylloxera-infested vineyard;Baldy;Vitis,1996
4. Synergy of multitemporal ERS-1 SAR and Landsat TM data for classification of agricultural crops;Ban;Canadian Journal of Remote Sensing,2003