| Verfasser | Häufigkeit |
| Fittkau, Bernd 1942- |
25 |
| Fittkau, Gerhard 1912-2004 |
22 |
| Fittkau, Siegfried |
15 |
| Fittkau, Herbert |
14 |
| Fittkau, Karl-Heinz 1959- |
14 |
| Fittkau, Ernst Josef 1927-2012 |
9 |
| Pump, Hermann |
9 |
| Janowski, Alexander |
8 |
| Fittkau, Ludger 1959- |
7 |
| Rauer, W. |
5 |
| Fittkau, Karl-Heinz |
4 |
| Fittkau, Stefan |
4 |
| Fittkau-Garthe, Heide 1941- |
4 |
| Geus, Thomas 1963- |
4 |
| Weber, Matthias 1943- |
4 |
| Fittkau, Hans-Jürgen |
3 |
| Fittkau, Tanja 1973- |
3 |
| Rauer, Wulf 1945- |
3 |
| Roedler, Jörg M. |
3 |
| Tausch, Reinhard 1921-2013 |
3 |