| Verfasser | Häufigkeit |
| Roa Bastos, Augusto 1917-2005 |
96 |
| Arık, Remzi Oğuz 1899-1954 |
23 |
| Roa, Martín de 1561-1637 |
22 |
| Roa, Raúl 1907-1982 |
14 |
| Roa, Juanita Solano |
11 |
| Decker, Rolf O. A. |
10 |
| Roa, Miguel |
9 |
| Kruschwitz, Lutz 1943- |
8 |
| Roa Bárcena, José M. |
8 |
| Röhrs, Michael |
8 |
| Roa Barcena, J. Maria |
7 |
| Roa Bastos, Augusto Antonio |
7 |
| Domingo, Plácido 1941- |
5 |
| González Roa, Fernando |
5 |
| Acosta Luna, Olga Isabel 1973- |
4 |
| Alén Rodríguez, Olavo 1947- |
4 |
| Chausson, Carlos 1950- |
4 |
| Perelstein, Mabel ca. 20. Jh |
4 |
| Roa, Javier |
4 |
| Roa, Vicente |
4 |