9A. Cagri Tolga. Fuzzy multicriteria R&D project selection with a real options valuation model[J]. Journal of Intelligent & Fuzzy Systems, 2008, (19): 359-371.
10dianxin Jiao, Arun Kumar, Ching Moi Lira. Flexibility valuation of product family arch tecture: a real-option approach[J]. Int J Adv Manuf Technol, 2006, (30): 1-9.