3Katz Michael L, Shapiro Carl. Network externalities, competition and compatibility [J]. American Economic Review, 1.985, 75 (3): 424-440
4Byungjoon Yoo, Vidyanand Choudhary. Pricing Strategies of Electronic B2B Marketplaces with Two - Sided Network Externalities. Procedings of the 35th Hawaii International Conference on System Sciences. USA: IEEE Computer Society, 2002:2348 -2359
5Gabel, David and Weiman, David, eds. Opening Networks to Competition: The Regulation and Pricing of Access. Amsterdam: Kluwer Academic Press