Крокодил, 1939 , № 20
Krokodil Magazine
Техника - молодежи №08 2007
Tekhnika Molodezhi Magazine
Наука и жизнь #12 1973
Nauka i Zhizn Magazine
Крокодил, 1930 , № 36
More Tales of the Black Widowers
Asimov, Isaac
Black Widowers (2)
The Return of the Black Widowers
Black Widowers (6)