| Verfasser | Häufigkeit |
| Barrett, David |
8 |
| Barrett, David V. |
8 |
| Barrett, David B. |
6 |
| Barrett, David M. |
4 |
| Johnson, Todd M. 1958- |
4 |
| Barrett, David M. 1951- |
3 |
| Kurian, George Thomas 1931- |
3 |
| Arroyo, Martina 1936- |
2 |
| Barrett, David 1972- |
2 |
| Barrett, David Dean |
2 |
| Cappuccilli, Piero 1929-2005 |
2 |
| Collins, Kenneth |
2 |
| Cossotto, Fiorenza 1935- |
2 |
| Domingo, Plácido 1941- |
2 |
| Giorgetti, Giorgio 1922- |
2 |
| Grist, Reri 1932- |
2 |
| Howell, Gwynne 1938- |
2 |
| Muti, Riccardo 1941- |
2 |
| Stapleton, Robin |
2 |
| Van Allan, Richard 1935-2008 |
2 |