https://www.ips-journal.eu/topics/economy-and-ecology/czechias-iron-trap-6714/
https://www.sudouest.fr/sante/pollution-en-europe-98-des-habitants-respirent-un-air-nocif-selon-des-chercheurs-16736663.php
https://futuros.gob.es/sites/default/files/2023-09/RESILIENTEU2030.pdf
https://assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/1002285/decarbonising-transport-a-better-greener-britain.pdf