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L’objectif de cette communication est de proposer un cadre d’analyse de l’évolution des relations partenariales. Ce cadre d’analyse est centré sur les dimensions interactives au sein de la relation modélisée comme système social complexe. Dans un premier temps nous proposons une...
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The concept of a barrier to entry has been discussed least since Bain [1956] with important contributions by Spence … dedicated session at the 2004 AEA meeting. Yet, a 'barrier to entry' remains a surprisingly elusive concept, which even … subject fail to resolve the issue, because they insist on analyzing barriers to entry in the context of identical firms in …
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For utility maximization problems under proportional transaction costs, it has been observed that the original market with transaction costs can sometimes be replaced by a frictionless {\em shadow market} that yields the same optimal strategy and utility. However, the question of whether or not...
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