Ideas (link)
Google scholar (link)
ResearchGate (link)
Roma Tre University (link)
Università Ca' Foscari Venezia (link)
University of Perugia (link)
University of the West of England (link)
University of Cape Town (link)
Stockholm International Peace Research Institute (SIPRI) (link)
The Department of Peace and Conflict Research (link)
The Worldwide Governance Indicators (WGI) (link)