6DIXIT A K,PINDYCK R S.Investment Under Uncertainly[M].Princeton:Princeton University Press,1994.
7AMRAM M,KULATILAKA N.Real Options:Managing Strategic Investment in an Uncertain World[M].Boston,MA:Harvard Business School Press,1998.
8PERTTI E C,ROSSETTO S.Internet Portals as Portfolios of Entry Options[R].Working Paper,No.00-105/2.Amsterdam,Nether2Lands:University of Amsterdam and CEPR,2000.
9FUDENBERG D,TIROLE J.Preemption and Rent Equalization in the Adoption of New Technology[J].The Review of Economic Studies,1985,52 (3):383-401.
10PAWIJNA G,KORT P M.Real Options in an Asymmetric Duopoly:Who Benefits from Your Competitive Disadvantage?[R].Working Paper,Tilburg University,2002.