各位朋友，能不能帮我下以下几篇文献，万分感谢！

6、

【篇名】Price dynamics anderror correction in stock index and stock index futures markets: Acointegration approach

【作者】Mahmoud Wahab;MalekLashgari

【网址】http://onlinelibrary.wiley.com/doi/10.1002/fut.3990130702/abstract

7、

【篇名】New Evidence of theEffectiveness of Portfolio Hedges in Currency Forward Markets

【作者】Larry J. ;Carl H.

【网址】http://www.jstor.org/discover/10.2307/40227714?uid=4778840&uid=3737800&uid=2134&uid=5909608&uid=2&uid=70&uid=3&uid=23020&uid=67&uid=62&sid=21104028731637

8、

【篇名】Hedging with stockindex futures: Estimation and forecasting with error correction model

【作者】Asim Ghosh

【网址】http://onlinelibrary.wiley.com/doi/10.1002/fut.3990130703/abstract

9、

【篇名】Some properties oftime series data and their use in econometric model specification

【作者】C. W. J. Granger

【网址】http://www.sciencedirect.com/science/article/pii/0304407681900798

10、

【篇名】A FractionalCointegration Analysis of Purchasing Power Parity

【作者】Cheung,Yin-Wong;Lai,KonS.

【网址】http://www.jstor.org/sici?sici=0735-0015(1993)11:1<103>2.0.CO;2-