http://www.ips-journal.eu/regions/europe/article/show/divide-and-rule-2125/
https://theconversation.com/por-que-colombia-ve-la-legalizacion-de-las-drogas-como-el-camino-a-seguir-221423
https://www.opendemocracy.net/uk/adam-ramsay/so-who-are-dup?utm_source=Daily+Newsletter&utm_campaign=646fb696e5-DAILY_NEWSLETTER_MAILCHIMP&utm_medium=email&utm_term=0_717bc5d86d-646fb696e5-407405485
https://publications.parliament.uk/pa/cm201719/cmselect/cmhaff/961/961.pdf