Source: Antiphonarium latino-bohemicumFolios: 27vFolio: 027vSequence: 1Full text (or incipit): Super te Ierusalem rex eterne misericordie descendere Christus qui natus est cuius hodie lux magnificeOffice: VGenre: TpFeast: Vigilia Nat. DominiCantus ID: 006882PzcForm: M