哪位朋友能帮我下一下这六篇文献，十分感谢！大部分都在这两个数据库中：Wiley Online Library、JSTOR US
1、Measuring hedging effectiveness in a traditional one-periodic portfolio framework——Oystein Gjerde
2、A note on the hedging effectiveness of foreign currency futures——Joanne Hill;Thomas Schneeweis
3、A Measure of Ex-Ante Hedging Effectiveness for the Treasury Bill and Treasury Bond Futures Market
4、The Effectiveness of Rolling the Hedge Forward in the Treasury Bill Futures Market——George M. McCabe and Charles T. Franckle
5、The hedging performance of the CD futures market——James A. Overdahl;Dennis R. Starleaf
6、An empirical test of the effect of basis risk on cash market positions——Janet S. Netz