La Trobe University - Library: Medieval Music Database - Annual cycle of feasts of liturgical chant, liturgical polyphony and secular music of the late middle ages.

... suavitatis

anonymous liturgical work

Cambridge: Corpus Christi College 8, flyleaf, fol. 270 (1/1) (Tenor only).

CORSI, Giuseppe. Poesie musicali del Trecento, Bologna: Commissione per i testi di lingua, 1970, p. 259.