1. Statistical Analysis: A Computer Oriented Approach;Afifi,1972
2. Adverse health effects caused by dust haze: A review;Bai;Environmental Pollution and Control (in Chinese),2006
3. The Standard of Surface Meteorological Observation(in Chinese);CMA (China Meteorological Administration,2003
4. The climatic characteristics and change of haze days over China during 1961–2005;Gao;Acta Geographica Sinica,2008
5. Study on the characteristics and formation of a multi-day haze in October 2011 in Beijing;Gao;Research of Environmental Sciences (in Chinese),2012