1. Below R, Grover-Kopec E, Dilley M (2007) Documenting drought-related disasters. A global reassessment. The Journal of Environment & Development, 16(3): 328–344
2. Bingfang W (2007) Introduction of China CropWatch system with remote sensing. ISPRS Archives XXXVI-8/W48 Workshop proceedings: Remote Sensing Support to Crop Yield Forecast and Area Estimates, Stresa, Italy (Eds. Baruth B, Royer A, Genovese G), 30 November–1 December 2006
3. Boken VK, Cracknell AP, Heathcote RL (2005) Monitoring and Predicting Agricultural Drought: A Global Study, Oxford University Press, Oxford
4. Brown ME (2008) Famine Early Warning Systems and Remote Sensing Data. Springer-Verlag, Berlin, Heidelberg
5. Chiew FHS, McMahon TA (2002) Global ENSO-streamflow teleconnection, streamflow forecasting and interannual variability. Hydrological Sciences Journal, 47: 505–522