5Allen D E. Spare debt capacity: company practices in Australia, Britain and Japan [J]. Australian Journal of Management, 2000, 25(3) :299 -326.
6Duan J, Yoon S H. Loan commitments, investment decisions and the signaling equilibrium [J]. Journal of Banking and Finance, 1993( 17 ) : 645-661.
7Hartbrd J. Corporate cash reserves and acquisitions [J ]. Journal of Finance, 1999(54) : 1969-1997.
8Marchica M T,Mura R. Financial Flexibility, Investment Ability, and Firm Value: Evidence from Firms with Spare Debt Capacity[J]. Financial Management .Winter 2010: 1339-1365.
9Myers S C,MajlufN S. Corporate financing and invest- ment decisions when firms have information that investors do not have [J]. Journal of Financial Economics,1984 (13) : 187-221.
10Scott F L, Michael R B. The Performance Implications of Financial Slack during Economic Recession and Recovery: Observations from the Software Industry (2001-2003). Journal of Managerial Issues,2008 spring.