| Verfasser | Häufigkeit |
| Pietarinen, Ahti-Veikko 1971- |
13 |
| Peirce, Charles S. 1839-1914 |
10 |
| Shafiei, Mohammad |
3 |
| Pietarinen, Ahti-Veikko |
2 |
| Bosveld- de Smet, Leonie 1956- |
1 |
| Chapman, Peter |
1 |
| Corter, James |
1 |
| Diagrams Tallinn; Online |
1 |
| Giardino, Valeria |
1 |
| Hilpinen, Risto |
1 |
| Linker, Sven |
1 |
| Majer, Ondrej |
1 |
| Pietarinen, S. |
1 |
| Rahman, Shahid |
1 |
| Sjöberg-Pietarinen, Solveig |
1 |
| Symons, John |
1 |
| Tulenheimo, Tero |
1 |