https://www.socialeurope.eu/social-ecological-public-procurement
https://www.bruegel.org/sites/default/files/2023-06/PB%2012%202023.pdf
https://static1.squarespace.com/static/5ca2608ab914493c64ef1f6d/t/60d7479cf8e7e5461534dd07/1624721314430/SE+Foundation+Commentary+and+core+text+revised+%281%29.pdf
https://www.bruegel.org/analysis/struggle-cut-emissions-international-aviation-and-shipping