Here, There Be Dragons
James A. Owen
ONLINE THE NEEDS OF THE MANY
Michael A. Martin
Наука и жизнь #02 1980
Nauka i Zhizn Magazine
Техника - молодежи №11 1991
Tekhnika Molodezhi Magazine
More Tales of the Black Widowers
Asimov, Isaac
Black Widowers (2)
The Return of the Black Widowers
Black Widowers (6)