vertical differentiation

• Dewan, Rajiv M. , Freimer, Marshall L. and Jiang, Yabing
  A Temporary Monopolist: Taking Advantage of Information Transparency on the Web
  Journal of Management Information Systems
  Vol. 24 No. 2 , Fall 2007 , pp. 167 - 194

• Bhargava, Hemant K. and Choudhary, Vidyanand
  Information Goods and Vertical Differentiation
  Journal of Management Information Systems
  Vol. 18 No. 2 , Fall 2001 , pp. 89 - 106

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