Leo IX
| Author(s) | Title | Reference | |
|---|---|---|---|
| CHRISTOPHER HOHLER | THE PROPER OFFICE OF ST. NICHOLAS AND RELATED MATTERS WITH REFERENCE TO A RECENT BOOK | 36/1, p. 40 |
| Author(s) | Title | Reference | |
|---|---|---|---|
| Gaines Post | La donazione di Costantino nei giuristi medievali, by Domenico Maffei | 34/3, p. 238 |