| Verfasser | Häufigkeit |
| Ferch, Heino 1963- |
1 |
| Grieser, Johannes 1955- |
1 |
| Gwisdek, Michael 1942-2020 |
1 |
| Hoger, Hannelore 1942-2024 |
1 |
| Joos, Holger |
1 |
| Langbein, Jens 1962- |
1 |
| Martens, Florian 1958- |
1 |
| Michelsen, Claudia 1969- |
1 |
| Poulheim, Achim 1956- |
1 |
| Schulte-Hemming, Robert 1957- |
1 |