Abbo Floriacensis, ca. 945-1004 |
Abbo of Fleury and Ramsay : commentary on the Calculus of Victorius of Aquitaine / edited by A.M. Peden |
Oxford : Oxford university press, c2003. |
Peden, Alison M. |
De semitonio : some medieval exercises in arithmetic / Alison M. Peden |
In: Studi medievali 3. ser., a. 35, fasc. 1 (1994), p. 367-403 |