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St Cyril and St Methodius National Library, Sofia, Bulgaria, Manuscripts and Old Printed Books Department; Neophyte of Rila MS, НР115 [2856], (written: 1851), fol. 34,35.

Printed music (in neumatic notation):

Псалтикиийна Литургия, trans.[Psaltic Liturgy], ed. by Manasiy Poptodorov, (Sofia: Синодално Книгоиздателство, 1992)