| Verfasser | Häufigkeit |
| Sponagel, Herbert |
3 |
| Feger, Karl-Heinz 1957- |
2 |
| Giani, Luise |
2 |
| Joisten, Holger |
2 |
| Kochan, Nils |
2 |
| Kühn, Dieter 1955- |
2 |
| Pfanz-Sponagel, Christiane |
2 |
| Sauer, Daniela 1970- |
2 |
| Schad, Peter |
2 |
| Sponagel, Herbert 1944-2011 |
2 |
| Berkessel, Hans 1955- |
1 |
| Endres, Stefan 1969- |
1 |
| Pfister-Wartha, Andrea |
1 |
| Regnath, R. Johanna 1968- |
1 |
| Schwendemann, Heinrich 1956- |
1 |
| Sponagel, Hiltrud |
1 |
| Widmann, Hans-Peter |
1 |