
https://watson.brown.edu/files/watson/imce/news/ResearchBriefs/2023/WI_Europe_s%20Energy%20Crisis_MP-3574_Final%20%281%29.pdf

https://www.economiesuisse.ch/de/print/pdf/node/48868

https://www.energycharter.org/fileadmin/DocumentsMedia/CCDECS/2019/CCDEC201908.pdf