| Date | Publication | Publisher | Type | Page | |
|---|---|---|---|---|---|
| August 1979 |
|
Star Rangers | Fawcett Crest | Novel | |
| January 1981 |
|
Star Rangers | Fawcett Crest | Novel | |
| November 1982 |
|
Die Insel der unsichtbaren Sonnen | Zauberkreis | Chapbook | |
| October 1984 |
|
Krieg der Gehirne | Bastei Lübbe | Chapbook | |
| 1994 |
|
Ken Barr: The Beast Within | Comic Images | Nonfiction | 81 |
| September 1999 |
|
Professor Zamorra, #661: Der Gegenschlag | Bastei | MAGAZINE |