| Verfasser | Häufigkeit |
| Borrego, Ignacio 1975- |
4 |
| Cerezuela Motos, Antonio |
4 |
| García Martínez, Pedro |
4 |
| Peña Fernández-Serrano, Martino 1971- |
4 |
| Albrecht, Benjamin |
2 |
| Altuna Charterina, Gaizka |
2 |
| Chacón López, Carlos |
2 |
| Cooke, Marcus S. |
1 |
| Evans, Mark D. 1962- |
1 |
| Peña-Fernández, Antonio |
1 |