4TANG Xiaolong, ZHANG Yah, YI Honghong, et al. Development a detailed inventory framework for estimating major pollutants emissions inventory for Yunnan Province, China[J]. Atmospheric Environment, 2012, 57: 116-125.
6Pai T Y, Hanaki K, Ho H H, et al. Using grey system theory to evaluate transportation effects on air quality trends in Japan[J]. Transportation Research Part D: Transport and Environment, 2007, 12(3): 158-166.
7Chang S C, Pai T Y, Ho H H, et al. Evaluating Taiwan's air quality variation trends using grey system theory[J]. Journal of the Chinese Institute of Engineers, 2007, 30(2): 361-367.
8MAO Mingzhi, Chirwa E C. Application of grey model GM(1,1) to vehicle fatality risk estimation[J]. Technological Forecasting and Social Change, 2006, 73: 588-605.
9Tien T L. A research on the grey prediction model GM(1,n)[J]. Applied Mathematics and Computation, 2012, 21(8): 4903-4916.