| Author | Popularity |
|---|---|
| Kerkhoff, M.A.T. | 12 |
| de Boer, J. | 11 |
| Kerkhoff, M. | 10 |
| de Vries, A. | 4 |
| Kat, M. | 3 |
| Otte, Piet | 3 |
| Pronk, René | 3 |
| de Vries, Arie | 3 |
| Boer, J. | 2 |
| Hamers, J.M.P. | 2 |
| Otte, P.F. | 2 |
| (Mia) Kerkhoff, M.A.T. | 1 |
| Buntsma-Hamers, J.M.P. | 1 |
| Geerdes, J. | 1 |
| Hagel, P. | 1 |
| Kerkhoff, M.A.Th | 1 |
| Pieters, H. | 1 |
| Scholtz, N. | 1 |
| Speur, J. | 1 |
| Tuinstra, L.G.M.T. | 1 |
