Journal Of The Econometric Society

An International Society for the Advancement of Economic
Theory in its Relation to Statistics and Mathematics

Edited by: Guido W. Imbens • Print ISSN: 0012-9682 • Online ISSN: 1468-0262

Econometrica: Sep, 1983, Volume 51, Issue 5

Natural Oligopolies<1469:NO>2.0.CO;2-3
p. 1469-1484

Avner Shaked, John Sutton

In a market where firms offer products which differ in quality, an upper bound may exist to the number of firms which can coexist at a noncooperative price equilibrium. We fully characterize the conditions under which this possibility arises.

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