| Verfasser | Häufigkeit |
| Feindt, Peter Henning 1967- |
2 |
| Garrido, Alberto 1964- |
2 |
| Mathijs, Erik |
2 |
| Meuwissen, Miranda P. M. 1972- |
2 |
| Soriano, Bárbara |
2 |
| Spiegel, Alisa 1990- |
2 |
| Urquhart, Julie |
2 |
| Meuwissen, Roger |
1 |
| Meuwissen, Stephanus Gerard Maria |
1 |
| Schelleman, Caren |
1 |
| Vaassen, Eddy H. J. |
1 |