
https://eur-lex.europa.eu/legal-content/EN/TXT/PDF/?uri=CELEX:32019R0452&from=EN

https://www.bruegel.org/policy-brief/eu-can-manage-without-russian-liquified-natural-gas

https://fpc.org.uk/wp-content/uploads/2022/04/London-Calling-publication-April-2022.pdf