http://ec.europa.eu/transport/sites/transport/files/pocketbook2016.pdf
https://en.euractiv.eu/wp-content/uploads/sites/2/special-report/EURACTIV-Special-Report-European-gas-markets.pdf
https://www.occrp.org/en/beneficial-ownership-data-is-critical-in-the-fight-against-corruption/this-luxembourg-businessman-got-europes-corporate-registries-shut-down-but-whose-privacy-was-he-protecting