9Osterwalder, A., Yves Pigneur, Chirstopher L. Tucci, Clarifying Business Models: Origins, Present, and Future of the Concept[J]. Communications of the Information Systems, 2005,15(5):1-25.
10Danah, M., Boyd, Nicole B. Ellison. Social Network Sites: Definition, History, and Scholarship[J]. Journal of Computer-Mediated Communication, 2008,(13):210-230.