Self explaining question. I did an extensive online research to find the original text, but it doesn't go before
In: Reinhard Kreckel (Hg.), »Soziale Ungleichheiten« (Soziale Welt Sonderband 2), Göttingen 1983, S. 183-198 Originalbeitrag, übersetzt von Reinhard Kreckel.
It should mean there must also be a French version which I'm unable to find.