| Count | Author |
| 3 | Behrens, A |
| 2 | Sorgato, MC |
| 2 | Aguzzi, A |
| 1 | Hetz, C |
| 1 | Ballarin, C |
| 1 | Beaudry, P |
| 1 | Bertoli, A |
| 1 | Brandner, S |
| 1 | Casonato, S |
| 1 | Creminon, C |
| 1 | De Gassart, A |
| 1 | Genovesi, S |
| 1 | Volland, H |
| 1 | Laplanche, JL |
| 1 | Lehmann, S |
| 1 | Massimino, ML |
| 1 | Maundrell, K |
| 1 | Negro, A |
| 1 | Peoc'h, K |
| 1 | Sazdovitch, V |
| 1 | Soto, C |
| 1 | Genoud, N |