An article entitled “The BAT/Protabaco Merger: Unilateral Effects, Tacit Collusion and Multimarket Oligopoly“ by David Harbord and Alvaro Riascos was published in the European Competition Law Review, Vol. 32, Issue 11, pp. 539-542, 2011. A Spanish version of this article appeared on the Foco Economico website on 7 June 2011 here.