https://theconversation.com/radicalizacion-violenta-similitudes-y-diferencias-en-la-evolucion-del-ira-y-eta-196509
https://theconversation.com/100-anos-del-golpe-de-estado-de-miguel-primo-de-rivera-213036
https://www.ipg-journal.de/regionen/europa/artikel/detail/macht-statt-moral-3554/