| Verfasser | Häufigkeit |
| Abdulrahman, Amer |
2 |
| Eckstein, Markus |
2 |
| Geppert, Carol |
2 |
| Guzman, Juan |
2 |
| Hartmann, Arndt |
2 |
| Jung, Rudolf |
2 |
| Lieb, Verena |
2 |
| Serrero, Ginette |
2 |
| Stöhr, Robert |
2 |
| Taubert, Helge |
2 |
| Wach, Sven |
2 |
| Weigelt, Katrin |
2 |
| Wullich, Bernd |
2 |
| Abdulrahman, Khalid Bin |
1 |
| Al-Ruwashid, Mohammed Suliman Abdulrahman |
1 |
| Al-ghazzal, Amad Ibn Al-mahdi |
1 |
| Berta, Scott C. |
1 |
| Giacaman, Rita |
1 |
| Gragnaniello, Cristian |
1 |
| Harden, Ronald M. |
1 |