Крокодил, 1989 , № 23
Krokodil Magazine
Крокодил, 1961 , № 06
Крокодил, 1966 , № 34
Наука и жизнь #02 1964
Nauka i Zhizn Magazine
The Return of the Black Widowers
Asimov, Isaac
Black Widowers (6)
More Tales of the Black Widowers
Black Widowers (2)