https://ec.europa.eu/anti-fraud/sites/antifraud/files/olaf_report_2016_en.pdf
https://www.swissinfo.ch/fre/pand%C3%A9mie-et-d%C3%A9mocratie_antoine-chollet—en-%C3%A9tat-d-urgence–il-existe-toujours-un-danger-d-accaparement-excessif-du-pouvoir-/45630548
https://www.opendemocracy.net/can-europe-make-it/albena-azmanova-barbara-spinelli-co-signatories/la-defensa-del-estado-de-derecho-