7Dixit A. and Pindyck R S. Investment under Uncertainty [ M ]. Princeton: Princeton University Press, 1994.
8Hayes R H. and Garvin D A. Managing as if Tomorrow Mattered [J]. Harvard Business Review, 1982 60 (3) :77 -79.
9Myers S C. Finance Theory and Financial Strategy[J]. Midland Corporate Financial Journal, 1983,5 ( 1 ) :6 - 13.
10Amram M and Kulatilaka N. Real Options: Managing Strategic Investment in an Uncertain World [ M ]. Boston Massachusetts : Harvard Business Press, 1999.
