| Verfasser | Häufigkeit |
| Hermans, Taco 1955- |
4 |
| Kamphuis, Jan |
3 |
| Gietman, Conrad 1966- |
2 |
| Gruben, Rob 1964- |
2 |
| Jepma, Catrinus J. 1953- |
2 |
| Kamphuis, Elise |
2 |
| Kamphuis, Jan Henk |
2 |
| Allan, Co 1934-2020 |
1 |
| Castelli, Silvia |
1 |
| Damsma, B. W. A. M. |
1 |
| Doesburg, Jan van 1963- |
1 |
| Emmelkamp, Paul M. G. 1949- |
1 |
| Harinck, George 1958- |
1 |
| Himes, Brant M. |
1 |
| Jager, Henk |
1 |
| Jager, Henk 1947- |
1 |
| Kamphuis, Bart L. F. |
1 |
| Kamphuis, H. J. |
1 |
| Kamphuis, J. |
1 |
| Koot, Hans |
1 |