http://www.ips-journal.eu/regions/europe/article/show/east-germans-and-the-far-right-afd-2315/
https://happiness-report.s3.amazonaws.com/2020/WHR20.pdf
https://bristoluniversitypressdigital.com/downloadpdf/journals/emsoc/4/2/article-p199.xml
https://es.insightcrime.org/noticias/balance-insight-crime-incautaciones-cocaina-2022/