| Verfasser | Häufigkeit |
|---|---|
| Roba, Jean-Louis 1953- | 25 |
| Roba, Jean 1930-2006 | 22 |
| Decker, Cynrik de 1966- | 11 |
| Ledet, Michel | 4 |
| Leotard, J. | 4 |
| Bernád, Dénes | 3 |
| Karlenko, Dmitriy | 3 |
| Anthoine, Roger | 1 |
| Arráez Cerdá, Juan | 1 |
| Cony, Christophe | 1 |
| Dekker, Thierry | 1 |
| Dubois, Jean-Pierre | 1 |
| Neulen, Hans Werner 1948-2021 | 1 |
| Neulen, Hans-Werner | 1 |
| Roba, Joseph | 1 |