8Ding S., Guariglia A., Knight J. Investment and Financing Constraints in China: Does Working Capital Management Make a Difference? [Jl. Journal of Banking & Finance, 2013,37(5) :1490-1507.
9Brown J. R., Petersen B. C. Cash Holdings and R&D Smoothing[ J]. Journal of Corporate Finance, 2011,17(3) :694-709.
10Brown J. R., Martinsson G., Petersen B. C. Do Financing Constraints Matter for R&D? [ J]. European Economic Review, 2012, 56(8) :1512-1529.
