8Bemeleit B, Schumacher J, Hans C. Methods of Risk Assessment and their Suitability in a Logistic Environment [A]. New York: Symposium on Risk Management[C].2005.
9George Kapetanios. Factor Analysis Using Subspace Factor Models:Some Theoretical Results and an Application to UK Inflation Forecasting[A]. London :Queen Mary Economies Working Paper[C].2005.
10卢纹岱.SPSS for Windows统计分析[M].北京:电子工业出版社,2005.311-330.
