Abstract
These standard indicators of the degree of oligopoly in markets are used in studying market conditions. The ratio is the combined market shares of the ‘oligopoly group’ of firms which, being few, are closely interdependent. The ratio is usually based on three, four or five firms.
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Shepherd, W.G. (2018). Concentration Ratios. In: The New Palgrave Dictionary of Economics. Palgrave Macmillan, London. https://doi.org/10.1057/978-1-349-95189-5_520
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DOI: https://doi.org/10.1057/978-1-349-95189-5_520
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