
https://rusi.org/sites/default/files/20190211_moiseienko_and_keatinge_extent_of_money_laundering_web.pdf

http://www.iata.org/publications/economic-briefings/value-of-air-cargo-2016-summary.pdf

https://www.opendemocracy.net/democraciaabierta/bernardo-guti-rrez/madrid-un-laboratorio-democr-tico