4Keynes, J. M., The General Theory of Employment, Interest and Money [M], Harcourt Brace (London), 1936.
5Jensen, M. C., Agency costs of free cash flow, corporate finance, and takeovers [J], American Economic Review, 1986, 76:323 - 329.
6Mann, S. V., Sicherman, N. W., The Agency Costs of Free Cash Flow: Acquisition Activity and Equity Issues [J], The Journal of Business, 1991 (Apr.), 64 (2) : 213 - 227.
7Harford, J., Corporate Cash Reserves and Acquisitions [J], The Journal of Finance, 1999 (Dec.), 54 (6) : 1969 - 1997.
8Opler, T., Pinkowitz, L., Stulz, R. M., Williamson, R., The determinants and implications of corporate cash holdings [J], Journal of Financial Economics, 1999, 52:3 46.
9Haushalter, D., Klasa, S., Maxwell, W. F. , The influence of product market dynamics on a firm's cash holdings and hedging behavior [J],Journal of Financial Economics, 2007, 84:797 - 825.
10Kim, Chang-Soo, Mauer, D. C., Sherman, A. E., The determinants of corporate liquidity: theory and evidence [J], Journal of Financial and Quantitative Analysis, 1998, 33:305 - 334.
