1. Desertification in Mongolia. National Agency for meteorology, hydrology and environment monitoring, Mongolia;Batjargal;RALA Rep. No.,1997
2. Vegetation canopy reflectance;Colwell;Remote Sens. Environ.,1974
3. Digital change detection methods in ecosystem monitoring: a review. International of thematic mapper data – the TM tasselled cap;Coppin;IEEE T. Geosci. Remote,2004
4. Introductory Time Series with R;Cowpertwait,2009
5. DesertWatch Project Extension;DW [DesertWatch project],2012