BAFU, Schwefeloxide (SOx) ([Internet, 2022-07-29](https://www.bafu.admin.ch/bafu/de/home/themen/chemikalien/schadstoffglossar/schwefeloxide.html))
FOEN, Sulphur oxides (SOx) ([Internet, 2022-07-29](https://www.bafu.admin.ch/bafu/en/home/topics/chemicals/glossary-of-pollutants/sulphur-oxides.html))
OFEV, Oxydes de soufre (SOx) ([Internet, 2022-07-29](https://www.bafu.admin.ch/bafu/fr/home/themes/produits-chimiques/glossaire-des-polluants/oxydes-de-soufre.html))
UFAM, Ossidi di zolfo (SOx) ([Internet, 2022-07-29](https://www.bafu.admin.ch/bafu/it/home/temi/prodotti-chimici/glossario-delle-sostanze-inquinanti/ossidi-di-zolfo.html))
USG: più frequente al plurale
USG: usually in the plural form