| Author | Popularity |
|---|---|
| Ma, W.C. | 14 |
| Harmsen, J. | 4 |
| de Vries, W. | 4 |
| Groenenberg, J.E. | 3 |
| Kros, J. | 3 |
| van den Toorn, A. | 3 |
| Bodt, J.M. | 2 |
| Bril, J. | 2 |
| Faber, J.H. | 2 |
| Klok, T.C. | 2 |
| Römkens, P.F.A.M. | 2 |
| Boels, D. | 1 |
| Bonten, L.T.C. | 1 |
| Bos, S.C. | 1 |
| Bosveld, A.T.C. | 1 |
| Bouwman, L.A. | 1 |
| Dijkhuis, J.E. | 1 |
| Domburg, P. | 1 |
| Duijn, R. | 1 |
| Kampf, R. | 1 |
