| Verfasser | Häufigkeit |
| Simeonova, Boyka |
4 |
| Galliers, Robert 1947- |
2 |
| Leidner, Dorothy E. |
2 |
| Simeonova, Denislava |
2 |
| Dimitrova, Kana |
1 |
| Dimitrova, V. |
1 |
| Galliers, Robert |
1 |
| Galliers, Robert D. 1947- |
1 |
| Gerimon, Paul |
1 |
| Gondwana Orchestra |
1 |
| Haralambieva, Galya |
1 |
| Honeyman, Ian 1953- |
1 |
| Kirov, Maksimilijan |
1 |
| Lauwers, Henk 1956- |
1 |
| Leidner, D. E. |
1 |
| Lens, Clara-Lane |
1 |
| Lens, Nicholas 1957- |
1 |
| McFadden, Claron 1961- |
1 |
| Ragin, Derek Lee 1958- |
1 |
| Sainova, Dessislava Simeonova |
1 |