| Original Language | Polish |
| First published | 1965 |
| Notes | First published in the “Młody Technik” magazine: Nr 12, 1965. Also published in the collection of stories "Władcy czasu" (1979) written by Stefan Weinfeld. |
Editions 1
Add Edition| Title | Publisher | Format | Language | Location | Dates | Impression | |
|---|---|---|---|---|---|---|---|
 | Galaktika 107 | Móra Ferenc Ifjúsági Könyvkiadó | Magazine | Hungarian | Budapest, Hungary | 1989-08 |