References: Forgang, W. G., & Einolf, K. W. (2006). Management Economics: An Accelerated Approach. M.E. Sharpe . Iran: OPEC May Need Further Output Cuts. (2008). World News Connection. Retrieved November 8, 2008, from EBSCOhost database. Kaplan, J. (1999). Unit 11 – Monopolistic Competition and Oligopoly. Retrieved November 8, 2008, from http://spot.colorado.edu/~kaplan/econ2010/section11/section11-main.html McConnell, C. R., & Brue, S.L. (2004). Economics: Principles, Problems and Policies (16th Ed). New York: The McGraw-Hill Companies. Report on Universal Postal Service and the Postal Monopoly. (n.d.). Retrieved November 7, 2008, from http://www.usps.com/postallaw/universalpostalservice.htm
References: Forgang, W. G., & Einolf, K. W. (2006). Management Economics: An Accelerated Approach. M.E. Sharpe . Iran: OPEC May Need Further Output Cuts. (2008). World News Connection. Retrieved November 8, 2008, from EBSCOhost database. Kaplan, J. (1999). Unit 11 – Monopolistic Competition and Oligopoly. Retrieved November 8, 2008, from http://spot.colorado.edu/~kaplan/econ2010/section11/section11-main.html McConnell, C. R., & Brue, S.L. (2004). Economics: Principles, Problems and Policies (16th Ed). New York: The McGraw-Hill Companies. Report on Universal Postal Service and the Postal Monopoly. (n.d.). Retrieved November 7, 2008, from http://www.usps.com/postallaw/universalpostalservice.htm