“…It should be clearly stressed, though, that despite there being many different theoretical modifications of the traditional Balassa's formula in use in the literature proposed on the grounds of its objective shortcomings as mentioned above [see e.g., Donges, Riedel, 1977;Bowen, 1983;Ballance, Forstner, Murray, 1985;Proudman, Redding, 2000;Hoen, Oosterhaven, 2006;Yu, Cai, Leung, 2008;Leromain, Orefice, 2013;Laursen, 2015], which in turn themselves are also subject to criticism, this approach continues to be widely used in a number of empirical studies concerning international competitiveness of economies from all around the world, ranging from special reports on the EU competitiveness commissioned by the European Commission [see e.g., EC, 2015;Pashev, 2015;EC, 2014;CIREM, 2013] to publications of the World Bank [Reis, Farole, 2012] and to research papers written by numerous economists [see e.g., Weresa, 2014;Ekmen-ÖzÇelÍk, Erlat, 2013;Saboniene, 2009]. All this seems to be proof enough that -to quote the words of Grigorovici [2009] -"RCA index is the most widely used for estimating the comparative advantage in the commercial relations between countries".…”