1. Adamenko T. and A. Prokopenko 2009. Monitoring drought and impacts on crop yield in Ukraine from weather and satellite data. In book Use of Satellite and In-Situ Data to Improve Sustainability. (Eds. Kogan F., A. Powell & O. Fedorov), pp 3-9.
2. ASP (American Society of Photogrammetry) 1975. Manual of Remote Sensing. Falls Church VA, 47 pp.
3. CGIAR 2015. Water, Land and Ecosystems in Africa. https://waterlandandecosystems.wikispaces.com/file/view/Component2_CIAT.pdf.
4. Cracknell, A.P. 1997: The Advanced Very High Resolution Radiometer. Taylor & Francis, USA, 534 p.
5. Ecosystems 2016. Global Ecosystems. https://www.google.com/search?q=global+ecosystems&tbm=isch&source=iu&ictx=1&fir=Gidp3yXe7hK5NM%253A%252CmveIbLDsA0igPM%252C_&usg=__2xzFKa2DvyEyAy3bBne31wR8-