http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32014R0600&from=EN
https://www.lobbycontrol.de/lobbyregister/bundestag-beschliesst-verbessertes-lobbyregister-112080/
https://ec.europa.eu/info/sites/info/files/2019-efb-annual-report_en.pdf