https://arxiv.org/pdf/2303.03371.pdf
https://cerre.eu/wp-content/uploads/2023/06/CERRE_Future-of-Rail-Report_06.06.2023.pdf
https://www.admin.ch/gov/fr/accueil/documentation/communiques.msg-id-90662.html
https://climact.com/en/opportunities-to-get-eu-industry-off-natural-gas-quickly/