1. Twentieth-century drought in the conterminous United States;Andreadis;J. Hydrometeorol.,2005
2. Natural Hazards;Bryant,2005
3. Analysis of drought hazards in North China: distribution and interpretation;Chen;Nat. Hazards,2012
4. CMA, 2006. Classification of Meteorological Drought. GB/T 20481-2006. China Meteorological Press, Beijing, China (In Chinese).
5. CMA, 2007. Altas of China Disastrous Weather and Climate China Meteorological Press, Beijing, China (In Chinese).