
http://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32014R0600&from=EN

https://worldjusticeproject.org/sites/default/files/documents/WJP-INDEX-2021.pdf

https://www.epsu.org/sites/default/files/article/files/EPSU%20Report%20Outsourcing%20state_EN.pdf