https://ccfr.bnf.fr/portailccfr/ark:/16871/004D02B11775
1supo/sup. Anitii Severini Manlii Boetii liber Sancte Trinitatis
supseverinilibertrinitatis
https://mathematics.library.cornell.edu/collected_works/anicii-manlii-torquati-sevrini-boetii-de-institutione-arithmetica-libro-duo-de-institutione-musica-libri-quinque-accedit-geometria-quae-fertur-boetii-e-libris-manu-scriptis-editit-godofredus-frie/
Anicii Manlii Torquati Sevrini Boetii De institutione arithmetica libro duo, De institutione musica...