Крокодил, 1924 , № 23
Krokodil Magazine
The Cassandra Complex
Brian Stableford
emortality (1)
Крокодил, 1955 , № 05
Наука и жизнь #11-12 1938
Nauka i Zhizn Magazine
The Alpha Centauri Project (Thinking worlds)
Marco Santini