Author details

Carlos Pedro dos Santos Gonçalves University of Lisbon, Institute of Social and Political Sciences, Lisbon, Portugal

\*Address all correspondence to: cgoncalves@iscsp.ulisboa.pt

© 2019 The Author(s). Licensee IntechOpen. This chapter is distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/ by/3.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
