| Author | Popularity |
|---|---|
| Rittermeier, Erika | 2 |
| Linneweber, Uwe | 1 |
| Petras, Harri | 1 |
| Schulz, Klaus | 1 |
| Szigan, Christoph | 1 |
| Thies, Dirk | 1 |
| VHS Hattingen | 1 |
| Wolfshöfer, Peter | 1 |
| Worgull, Lothar | 1 |
| Author | Popularity |
|---|---|
| Rittermeier, Erika | 2 |
| Linneweber, Uwe | 1 |
| Petras, Harri | 1 |
| Schulz, Klaus | 1 |
| Szigan, Christoph | 1 |
| Thies, Dirk | 1 |
| VHS Hattingen | 1 |
| Wolfshöfer, Peter | 1 |
| Worgull, Lothar | 1 |