| Verfasser | Häufigkeit |
| Hartel, Dirk H. 1972- |
16 |
| Hartel, Klaus D. |
11 |
| Brünneck, Alexander von 1941-2023 |
8 |
| Dombert, Matthias 1955- |
8 |
| Härtel, Ines 1972- |
8 |
| Hartel, Klaus Dieter |
7 |
| Härtel, Eva |
5 |
| Härtel, Klaus Dieter 1937- |
5 |
| Neubauer, Dieter |
5 |
| Hartel, Richard W. |
3 |
| Hartel, W. |
3 |
| Brahms, Johannes 1833-1897 |
2 |
| Breitkopf & Härtel (Berlin) |
2 |
| David, Johann Nepomuk 1895-1977 |
2 |
| Dietz, Helmut |
2 |
| Dirkopf, Frank |
2 |
| Goff, H. Douglas |
2 |
| Hartel, Walter |
2 |
| Hensel, Fanny 1805-1847 |
2 |
| Härtel, Insa |
2 |