3Trigeorgis,L.Real Options in Capital Investment [M].American: Praeger Press,2000.
4Trigeorgis,L.The Nature of Option Interactions and the Valuation of Investments with Multiple Real Options[J].Journal of Financial and Quantitative Analysis,1993,3.
5Trigeorgis,L.Real Options and Interactions with Financial Flexibility[J].Financial Management, 1996,9.