这是高盛两个分析者写的文章，有一篇同题目加拿大银行写的，大家不要弄混哦，我想找高盛那篇~先谢过~

Corporate Bond Spreads and the Business Cycle
Introducing GS-SPREAD
Andrew Bevan and Francesco Garzarelli

The Journal of Fixed Income March 2000, Vol. 9, No. 4: pp. 8-18

http://www.iijournals.com/doi/abs/10.3905/jfi.2000.319249