9Wang Yuhong,Pohl E A,Dang Yaoguo. Reliability Prediction Using an Unequal Interval Grey Model[A].San Jose,C A,2010.1-5.
10Yang S H,Chen Y P. Intelligent Forecasting System Using Grey Model Combined with Neural Network[J].International Journal of Uncertainty Fuzziness and Knowledge-Based Systems,2011,(01):8-15.
