For oligopoly, however, there is no single accepted framework for tax analysis.

不过，对于寡头垄断市场，还没有一个被完全接受的税收分析框架。

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In this paper we established an oligopoly game model, discussed and analyzed the results of the model, after that several proposes are raised for the management of brokerage industry.

本文利用寡头博弈理论建立了佣金定价模型，并对该模型进行了结果讨论与分析，提出了关于券商经纪业务管理的若干建议。

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For a long time, the petroleum industrial organization has been lower in efficiency, the result of lacking in market structure of oligopoly.

长期以来，石油产业组织效率低下，一个很重要的原因是没有形成寡占型市场结构。

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The result is a three-carrier oligopoly with attractive competitive characteristics for Sprint, Lee says.

FORBES: How Sprint Wins Big If AT&T/T-Mobile Merger Blocked

All these rules make it hideously difficult for new parties to break the electoral oligopoly of the existing ones.

ECONOMIST: Suck it and see

Fifth, they cannot be seen as taking a biased approach to sovereign debt risks, a hard stance on Europe (downgrading the one country after another) and a soft on the US. Already, a number of European countries are pushing for the creation of European credit agencies that would threaten the credit agency oligopoly.

FORBES: Why Investors shouldn't ignore Credit Agency Warnings