| Verfasser | Häufigkeit |
|---|---|
| Fries, Gerhard | 15 |
| Fries, Hans-Peter | 3 |
| Otto, Gerhard C. | 3 |
| Russell, John 1919-2008 | 2 |
| Fries, Christian | 1 |
| Fries, Ulrich | 1 |
| Fries, Wolfgang | 1 |
| Gerhard, Stefan | 1 |
| Hardy-Marais, Laurence | 1 |
| Jeschke, Gerhard | 1 |
| Kurde, Julia | 1 |
| Maurer, Reinhold | 1 |
| Neumeier, Gerhard 1960- | 1 |
| Stärk, Norbert | 1 |