| Verfasser | Häufigkeit |
| Heijmans, Henk J. A. M. |
25 |
| Heijmans, Jeroen |
5 |
| Heijmans, Marc 1959- |
5 |
| Diekmann, Odo 1948- |
3 |
| Heijmans, Gerardus Johannes |
3 |
| Heijmans, John |
3 |
| Magnus, Jan R. 1948- |
3 |
| Pieter, Willy |
3 |
| Ronse, C. |
3 |
| Thieme, Horst R. 1948- |
3 |
| Grabosch, Annette |
2 |
| Grasso, John |
2 |
| Guyon, Jean 1945- |
2 |
| Heijmans, Risto |
2 |
| Heijmans-van Bruggen, Mariska |
2 |
| Kemperman, Jeroen |
2 |
| Mallon, Bill |
2 |
| Mallon, Bill 1952- |
2 |
| Abadir, Karim Maher 1964- |
1 |
| Ambrosi, Jean-Paul |
1 |