Peitz, Martin; Reisinger, Markus - 2009
oligopoly. We find that in the short run, i.e. when the number of firms in both markets is exogenous, the results concerning tax … undershifting are more pronounced, potentially to a very large extent. Instead, in the long run under endogenous entry and exit … overshifting of both taxes is more likely to occur and is more pronounced under upstream oligopoly. As a result of this, a tax …