PL 104, col. 29

Liber adversum dogma Felicis Urgellensis (Agobardus Lugdunensis), J. P. Migne

amatori, ideoque victori ac triumphatori piissimo
Augusto, domno gloriosissimo Ludovico imperatori,
Agobardus quidam ex ultimis fidelibus servulis vestris,

Text from the Corpus Corporum (University of Zurich).