http://ec.europa.eu/transport/sites/transport/files/pocketbook2016.pdf
https://www.bwb.gv.at/fileadmin/user_upload/Abschlussbericht_BU_Kraftstoffe_2022_final_barrierefrei.pdf
https://www.courthousenews.com/eu-must-act-quickly-to-catch-up-to-us-warns-report-author/
https://www.google.com/url?sa=t&rct=j&q=&esrc=s&source=web&cd=&ved=2ahUKEwiYtOnpoqT1AhXV7rsIHfpxDhcQFnoECAcQAQ&url=https%3A%2F%2Fosf.io%2Fpreprints%2Fsocarxiv%2F8nzb4%2Fdownload&usg=AOvVaw1M87IVrQbHicDueJuLi74b