| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1972 |
|
Perry Rhodan #16: Secret Barrier X | Ace Books | MAGAZINE | 10 |
| 1974 |
|
Perry Rhodan #16: Secret Barrier X | Ace Books | MAGAZINE | 10 |
| July 1976 |
|
Secret Barrier X | Orbit | Chapbook |