https://theconversation.com/el-lobby-bajo-la-lupa-es-una-actividad-democratica-221947
http://unesdoc.unesco.org/images/0021/002178/217876e.pdf
https://www.ips-journal.eu/topics/democracy-and-society/a-fight-out-of-the-tentacles-of-the-crime-kraken-6993/
https://www.propublica.org/article/clarence-thomas-scotus-undisclosed-luxury-travel-gifts-crow