{{Tr|Hilia Brinis and Beata Della Frattina}}
| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| October 1973 |
|
Urania #630 | Mondadori | MAGAZINE | 23 |
| March 1979 |
|
Asimov Story | Mondadori | Collection | 458 |
| May 1987 |
|
Asimov Story | Mondadori | Collection | 458 |