| Verfasser | Häufigkeit |
| Haas, Harald |
7 |
| Bant, Harald 1966- |
3 |
| Haas, Hans-Josef 1958- |
3 |
| Haas, Harald 1968- |
3 |
| Ophey, Martin 1975- |
3 |
| Steverding, Mike 1963- |
3 |
| Abumarshoud, Hanaa |
2 |
| Chen, Cheng |
2 |
| Dimitrov, Svilen |
2 |
| Haas, Harald 1965- |
2 |
| Haas, Norbert P. 1946- |
2 |
| Kernic, Franz 1960- |
2 |
| McLaughlin, Stephen |
2 |
| Nerlich, Michael 1953- |
2 |
| Tscherne, Harald |
2 |
| Biebl, Franz 1906-2001 |
1 |
| Düchtel, Norbert 1949- |
1 |
| Faßbender, Jürgen 1961- |
1 |
| Genzmer, Harald 1909-2007 |
1 |
| Haas, Christina 1989- |
1 |