Alleluia Raz Pdf Access

I was unable to locate a direct PDF of a paper specifically titled "Alleluia raz" — this appears to be a rare or possibly misspelled reference. It may refer to a scholarly work on the in medieval or liturgical contexts (e.g., the Raz might be a name, abbreviation, or typo for a source like Razzi , a manuscript siglum, or a modern author).