Über die Synthese des Testikelhormons (Androsteron) und Stereoisomerer desselben durch Abbau hydrierter Sterine.

First complete synthesis of a sex hormone (androsterone). With M. W. Goldberg, J. Meyer, H. Brüngger, and E. Eichenberger.
In 1939 Ruzicka shared the 1939 Nobel Prize in Chemistry with Butenandt (No. 1195) "for his work on polymethylenes and higher terpenes, including the first chemical synthesis of male sex hormones."