| Verfasser | Häufigkeit |
| Jefferies, Matthew 1962- |
11 |
| Becker, Kuno |
3 |
| Hui, Pak Ming |
3 |
| Jefferies, Mike |
3 |
| Jefferies, Paul |
3 |
| Johnson, Neil F. 1961- |
3 |
| Denzel, Markus A. 1967- |
2 |
| Dillane, Stephen 1957- |
2 |
| Harlizius-Klück, Ellen |
2 |
| Jefferies, Janis |
2 |
| Jefferies, Richard 1848-1887 |
2 |
| Lozanne Jefferies, Claudia de 1963- |
2 |
| McLean, Alex 1975- |
2 |
| Pieper, Renate 1956- |
2 |
| Ajithkumar, Thankamma V. |
1 |
| Ashworth, Piers ca. 20. Jh |
1 |
| Barrett, Ann |
1 |
| Barrett, Michael 1970- |
1 |
| Been, Ken |
1 |
| Bradbury, Colin |
1 |