
https://pop-umbrella.s3.amazonaws.com/uploads/9dacd52a-6987-4dcb-a90c-4a1146f4a342_Taxing%20Multinationals.pdf

http://www.aviationlaw.eu/wp/wp-content/uploads/2013/09/Freedoms-of-the-Air-Explained.pdf

https://trybunal.gov.pl/en/hearings/judgments/art/11662-ocena-zgodnosci-z-konstytucja-rp-wybranych-przepisow-traktatu-o-unii-europejskiej