3James D. Hamilton. Time Series Analysis [ M ]. Princeton UniversityPress, 1994.
4Markku Lanne, Pentti Saikkonen. Non - linear GARCH models for highly persistent volatility [ J]. Econometrics Journal ,2005 ( 8 ).
5Gordon M. Bodnar, Richard C . Marston and Gregory Hayt: 1998 Survey of Financial Risk Management by U. S. Non-Financial Firms, Survey report by Weiss Center for International Financial Research of the Wharton School and CIBC World Markets, 1999.
7Silvaptflle P, Moosa I A. The relationship between spot and futures prices: Evidence from the crude oil market [J]. Journal of Futures Markets, 1999,19(2).
8Ripple R D, Moosa I A. Futures maturity and hedging effective- ness: the case of oil fumres[J].Working paper,2005.
