| Bio-Bibliographical Guide to Medieval and Early Modern Jurists | 
| Click on image for more information | 
| Contents – Main Entry Through Author Search | 
| MainEntry | Date | Report_No | 
|---|---|---|
| Perpendiculum | c.1180 | |
| Other name(s): Summmula de presumptionibus, Tractatus de praesumptionibus | ||