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

Agnus Dei, pater dei lumen rey

anonymous

Tarragona: Archivo Episcopal 44 (olim 12), fol. 20-21 (2/2).

LUDWIG, Friedrich. 'Die mehrstimmigen Werke der Handschrift Engelberg 314', Kirchenmusikalisches Jahrbuch, XXI (1908), p. 52., p. 52.