http://blogs.lse.ac.uk/brexit/2017/08/11/book-review-shifting-baselines-of-europe/
https://theconversation.com/100-anos-del-golpe-de-estado-de-miguel-primo-de-rivera-213036
https://theconversation.com/ampliacion-o-profundizacion-de-la-union-europea-227125