https://www.energycharter.org/fileadmin/DocumentsMedia/CCDECS/2019/CCDEC201908.pdf
https://www.economiesuisse.ch/de/artikel/die-versorgungssituation-der-schweiz-bleibt-kritisch?utm_medium=email&utm_source=mailXpert&utm_campaign=Newsletter&utm_content=Der%20neue%20Swiss%20Code%20und%20was%20er%20in%20der%20Praxis%20bedeutet
https://www.emcdda.europa.eu/publications/html/pods/waste-water-analysis_en
https://www.investigate-europe.eu/posts/congo-brazzaville-european-oil-companies-petronor-perenco-secret-interests-with-ruling-family