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

Salve regina, ... mater es sed virginalis

anonymous antiphon

Nürnberg: Stadtbibliothek, Will III, 796c, fol. 1 (2/2) (fragment).

HALBIG, H. 'Ein zweistimmiges Salve Regina aus dem 14. Jahrhunderts' Kirchenmusikalisches Jahrbuch, XXV (1930): 57ff.