Hosar, Halvor Incipits Mass Spurious 1 Incipits for the mass Wanhal Spurious 1.<br> Incipit;Wanhal;Catalogue;Musicology and Ethnomusicology 2017-08-17
    https://auckland.figshare.com/articles/figure/Incipits_Mass_Spurious_1/5324413
10.17608/k6.auckland.5324413.v3