7Cho Sam-Yong,Shin Sun-Woo,Lee W.The impact of Financial Leverage on Firm Investment:Listed Manufacturing firms'Data for System-GMM P-anel[J].Analysis Review of Fiscal Studies,2004(8):41-75.
8Lang L.E.,Ofek E.Stulz R.,Leverage.Investment and Firm Growth[J].Journal of Financial Economics,1996,40:3-29.
9Aivazian V.A,Geb Y,Qiu J.P.The Impact of Leverage on Firm Investment:Canadian Evidence[J].Journal of Corporate Finance,2005(11):277-291.