Viktor Petrov in the USSR In. Ukrainian news, 1956, 6th August, p. 2.

The article suggests that Viktor Petrov returned to the USSR following his sudden disappearance in Germany in 1949. This assumption is based on the fact that Viktor Petrov's name appeared in a 1955 publication issued by the USSR Academy of Sciences — Aleksandr Monhait's Archaeology in the USSR.

In addition to this version, the article also presents other theories regarding Viktor Petrov's fate that circulated in connection with his disappearance.