| Verfasser | Häufigkeit |
|---|---|
| Ünel, Birol 1961-2020 | 20 |
| Ünel, Birol | 8 |
| Başkan, Birol | 7 |
| Can, Birol | 5 |
| Emil, Birol | 5 |
| Akin, Fatih | 4 |
| Birol, İnci A. | 4 |
| Eden, Birol Nelu | 4 |
| Klausmann, Rainer | 4 |
| Yeşilada, Birol A. | 4 |
| Zapatka, Manfred 1942- | 4 |
| Brenner, Hans | 3 |
| Eichhorn, Karoline 1965- | 3 |
| Fitik, Birol | 3 |
| Işıklı, Mehmet | 3 |
| Karakaya, Birol 1967- | 3 |
| Kekilli, Sibel | 3 |
| Kekilli, Sibel 1980- | 3 |
| Sarica, Feyzi Birol | 3 |
| Striebeck, Catrin | 3 |