context: In 1935 he was arrested in connection with the Kirov affair.
source: D. Ivanenko was a professor at Tomsk University from 1936 to 1938.
reference_original: Ivanenko war Professor an der Universität von Tomsk von 1936 bis 1938.
reference_flipped: Ivanenko war Professorin an der Universität von Tomsk von 1936 bis 1938.