https://www.dossier.at/dossiers/aktuelles/zu-kuehl-um-wahr-zu-sein/
https://library.wmo.int/doc_num.php?explnum_id=10108
https://piie.com/system/files/documents/2018-06-27-rosengren-presentation.pdf
https://www.morganlewis.com/documents/m/documents/cartel/cartel-report_end-2018_190022.pdf