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Данные Opera America; полный обзор см.: Anita Elberse, Crissy Perez. The Metropolitan Opera (B) // Harvard Business School, supplement 509–034.
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Divas in Training // Wall Street Journal, April 24, 1996.
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James Barron. In Final Twist, Ill Pavarotti Falls Silent for Met Finale // New York Times, May 12, 2002.
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Daniel J. Wakin. Verdi with Popcorn, and Trepidation // New York Times, February 15, 2009.
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Anne Midgette. Met Opera to Expand in Theaters Across Globe // New York Times, August 9, 2007.
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Daniel J. Wakin., Kevin Flynn. A Metropolitan Opera High Note, as Donations Hit $182 Million // New York Times, October 10, 2011.
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См.: Josh Tyrangiel. Rebels Without a Contract // Time, March 19, 2007. // Раздел главы основан на исследованиях: Anita Elberse, Jason Bergsman. Radiohead: Music at Your Own Price (A) // Harvard Business School, case 508–110; Anita Elberse, Jason Bergsman. Radiohead: Music at Your Own Price (B) // Harvard Business School, supplement 508–111.
