5Ederington L H, The hedging performance of the new futures markets[J]. Journal of Finance, 1979, (34):157-170.
6Johnson L. The theory of hedging and speculation in commodity futures[J]. Review of Economic Studies, 1960,27:139-151.
7Herbst A F, Kare D, Marshall J F. A time varying, convergence adjusted, minimum risk futures hedge ratio[J].ADvances in Futures and Options Research, 1993, (6).
8Myers R J, et al. Generalized optimal hedge ratio estimation[J]. American Journal of Agricul Tural Economics, 1989, (71 ).
9Engle R F, Granger C W. Cointegration and error correction : representation ,estimation and testing[J]. Econometriea, 1987 (55):251-276.
10Ghosh A. Hedging with stock index futures: estimation and forecasting with error correction model[J]. Journal of Futures Markets,1993, (13):743-752.