| Verfasser | Häufigkeit |
| Dobrowolski, Jan Fryderyk |
1 |
| Gassmann, Jan 1983- |
1 |
| Giger, Peter 1939- |
1 |
| Giger, Ramòn 1982- |
1 |
| Gurdjieff, Georges I. 1872-1949 |
1 |
| Gurtu, Trilok 1951- |
1 |
| Hammond, Douglas |
1 |
| Hartmann, Thomas de |
1 |
| Hoffmann, Pascal |
1 |
| Miyata, Kei |
1 |
| Schmidt-Garre, Jan 1962- |
1 |
| Skidmore, Alan 1942- |
1 |