E. Tsatsanis et al.,  "The Impact of the Economic Crisis on the Ideological Space in Portugal and Greece: A Comparison of Elites and Voters", in Political Representation in Times of Bailout: Evidence from Greece and Portugal, Freire, André, Lisi, Marco, Andreadis, Ioannis, Viegas, José Manuel Leite Viegas , Ed., Londres, Routledge, 2016, pp. 64-85