| Verfasser | Häufigkeit |
| Liardon, Roberts |
14 |
| Roberts, Richard L. 1949- |
9 |
| Roberts, Nora 1950- |
4 |
| Langner, Rita |
3 |
| Derf 1959- |
2 |
| FitzRoy, Renate |
2 |
| Grencis, Richard K. |
2 |
| Heche, Anne 1969-2022 |
2 |
| Hollander, Andrew |
2 |
| Katz, Daniel |
2 |
| Lane, Richard P. |
2 |
| Liebenwein, Renate 1942-2020 |
2 |
| Loos-Frank, Brigitte |
2 |
| Lucius, Richard |
2 |
| Lynch, Ross 1995- |
2 |
| Meyers, Marc |
2 |
| Roberts, Craig W. |
2 |
| Roberts, Dallas 1970- |
2 |
| Roberts, John |
2 |
| Roberts, Richard L. |
2 |