https://www.eurofound.europa.eu/sites/default/files/ef_publication/field_ef_document/ef1725en.pdf
https://www.brookings.edu/opinions/the-foreign-policies-of-the-sinaloa-cartel-and-cjng-part-iii-africa/
http://wir2018.wid.world/files/download/wir2018-summary-german.pdf
http://www.beaconforfreedom.org/liste.html?tid=415&art_id=475%20